Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0e88508544a627…

MALICIOUS

PDF

81.0 KB Created: 2021-05-19 03:16:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 12b633f29e027238709e46b99ba5919f SHA-1: 07c8ee0924aad2f5a89333ad26bd6a9e505b4ca1 SHA-256: bd0e88508544a6274e9fdab0513616734d5cee9b2728f9df0002371c4d670caa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608715a1639a3---71869046322.pdf In PDF document text
    • https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/uaheg7hi3a8lohvdbh09u6vv7m/vovanogorawuwunuwe.pdfIn PDF document text
    • https://t2sc.me/userfiles/59283736770.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e1a4327556---reketugivijumafojufele.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/mt7jnpt1avn4rl0vvjm8gq4qv5/lewiz.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/3f189jksanv6innfs0ttfl17k2/bibasitaniwaroxafumuta.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160823816e64a1---32871285227.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/78fb63adbe996e31364119a383bfcce4/newagovovagagukopeguje.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606dd40c024eb---6609038809.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/f9bcce4482de6ba2990a3acbdc7d80cf/wuzowukigevej.pdfIn PDF document text
    • https://abeess.com/userfiles/file/78630307569.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/31635936cf528908ff0e6e32b2aa25ef/23080301979.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/7e93d2f83cd9eabe8d555c02278a2629/12027647294.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/d9ab9680aaacf42a23562565f5b20312/solumamulexudi.pdfIn PDF document text
    • http://planbmedia.hufiles/lapukopibinij.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608633773070b---tazafavegejesikazot.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/ernl3fasq66ogjja54v8v2ednd/givefakizel.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/zitunodisunuxon.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ad1812f9c---bapabozuzosa.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608bfdc6e7754---50986878351.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=return+man+unblocked+games+76PDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD00 5704 bytes
SHA-256: b51cdc35108b4fafb5a387661b60833ab09abee845ab181df7aa15d3fcdadd6a
font_01_sfnt_off00011058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11058 11252 bytes
SHA-256: 064a25e31a15ddfaac9874b3ddff494a5533d6d6dbb50ae829591361e14b8146

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