Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ab2f7b194afadd…

MALICIOUS

PDF

453.8 KB Created: 2021-06-28 02:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 120c8b9a0635992045188e86d5186fbb SHA-1: 37622507a530d68cba4fcc14c4d7fd82d4ec9743 SHA-256: 67ab2f7b194afaddcd7fe8b129e970c8e67e42ea9d64bfcb8beee1b3390341ba
266 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF document exhibits multiple high-risk heuristics, including a lure for browser extension installation and a request for recovery secrets, indicating a phishing or credential theft attempt. The presence of numerous links to compromised WordPress upload storage and other unknown PDFs suggests it is part of a larger campaign to distribute malicious content. While no scripts were directly extracted, the PDF structure and heuristic firings strongly suggest it is designed to exploit user trust for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8493

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a99d27e0f67---78022417949.pdf In PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9eeae28a9---fodadenexekotu.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/3153f5bbc40b361cd476eb4655dfb9ee/jovuxokusetavixenivir.pdfIn PDF document text
    • http://kawoka.com/userfiles/file/37065775533.pdfIn PDF document text
    • http://cy2hand.com/userfiles/68412059852.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/2426082307.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4e66907fa---bukelijasene.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/d5323391771f66881ae513e410be6e46/rixilojuvuwakuzexu.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/wimukutumapasot.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/644752574db4ed2b3496956b88a93720/55075052779.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/ja58kgoa26le5furtu7tk81d16/68697819642.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/16082e1ad988fb---nomulujikukoxexabomo.pdfIn PDF document text
    • https://bravo-hk.com/userfiles/file/dupiponafixupuwos.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/rj5nsffp7fsq9g62qsok9ese41/61764112735.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608f28d39688d---tigeravefok.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160852e98a8379---80902933446.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/e9cd43b3fae4166d524d36fd705e9057/70302321466.pdfIn PDF document text
    • http://say-international.eu/userfiles/file/tupakigofenuvaxepek.pdfIn PDF document text
    • https://askopenko.com/wp-content/plugins/super-forms/uploads/php/files/c1d620b9449cb06c55d36e5709b13d89/mobivo.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/06j6o3pm8lfrf325mup2o2d9jh/revisuzi.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/59973282851.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/fufaturik.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b4391306f9a---xewenavuralugupej.pdfIn PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/15ffacb85beb791818885e1957867294/84013458243.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=design+patterns+used+in+react+jsPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006a2b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2B2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0006bac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAC9 10756 bytes
SHA-256: 951580c9dc40b84126a411233fdc5c56a53336bb52ad65a0201f57694f306580
font_02_sfnt_off0006d375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D375 19404 bytes
SHA-256: b8503d4a14260b5a129eb3a5c2971087d0669b59e35d2c22710a25753d003809

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