Malicious PDF — malware analysis report

Static analysis result for SHA-256 69fe69b6ab3f41ae…

MALICIOUS

PDF

72.2 KB Created: 2021-09-19 03:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0a2e1a1a358613979ce9e82b5ba768e9 SHA-1: bbb603c0a327fef0ce564ad721685613912ac1f6 SHA-256: 69fe69b6ab3f41ae6bf1fc5e071b4e4361df2425e4908321888ff9104b0ce15b
176 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple external websites, some of which are hosted on compromised CMS platforms. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or tech-support scam pretext, aiming to trick users into interacting with malicious links or content. No scripts were extracted, but the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://stepasidemedical.com/images/uploads/file/64985460977.pdf In PDF document text
    • https://ipssecurityconsultants.com/ckfinder/userfiles/files/3682517331.pdfIn PDF document text
    • https://indiansabroad.uk/userfiles/file/24113170846.pdfIn PDF document text
    • http://djpress.pl/Image/files/28840917300.pdfIn PDF document text
    • http://rcsiprojectracker.com/userfiles/files/12702355294.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613292e09e1af---9549491607.pdfIn PDF document text
    • https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/jewelubiburuvowemevup.pdfIn PDF document text
    • https://illustrations.noche.fr/images/files/rijesogiwuwebad.pdfIn PDF document text
    • https://hainutedecopii.eu/ckfinder/userfiles/files/biwozirixipotabeseza.pdfIn PDF document text
    • https://mwasafat.com/uploads/files/12046662025.pdfIn PDF document text
    • http://alfonsoguiggiarchitetto.it/userfiles/files/mejefuf.pdfIn PDF document text
    • http://aurora-c.jp/files/files/borusoxebi.pdfIn PDF document text
    • https://e-fasteners.eu/media/file/xunokivugosowesodezube.pdfIn PDF document text
    • http://www.novosib-sport.ru/ckfinder/userfiles/files/30520548870.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/71284800995.pdfIn PDF document text
    • https://holcom-wd.com/webroot/img/files/funatosutefibakodum.pdfIn PDF document text
    • http://soyaksiesta3.com/userfiles/file/xidatajotemipiru.pdfIn PDF document text
    • https://aarushimukhwas.idealviews.com/userfiles/files/jaxojununezufujasoti.pdfIn PDF document text
    • http://tongshengchem.com/ckfinder/userfiles/files/72502129964.pdfIn PDF document text
    • http://achilleferolla.it/userfiles/files/nomatonoviwezapujatovas.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613fd66303dd3---24717677908.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/ruvesituwuni.pdfIn PDF document text
    • https://ajambary.com/userfiles/file/75722896991.pdfIn PDF document text
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/7acc64b2f68313124247a7c1f8ba5305/28111294923.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=xnxubd+s4+video+downloader+apk+download+free+full+versionPDF 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_off0000b6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B5 16768 bytes
SHA-256: 915b6b8b232989c97e3cf76604d1354b1a3a4de614d56441c6727b09e839d79f
font_01_sfnt_off0000e171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE171 11064 bytes
SHA-256: dcab4492895b4b779a5ac7098f78874179cfd6c611eb98ff0a5ec2c2607abfbc
font_02_sfnt_off0000fb2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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