Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29654a9e5363ea6…

MALICIOUS

PDF

84.6 KB Created: 2021-06-03 19:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 516a86e23a11f01ccb07189a212d9290 SHA-1: b673d13d7507b467aedf018d28aa5e1ae9a72f9d SHA-256: e29654a9e5363ea6e6409c7047018c81df335959dadce24c90a2f084741658d8
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/123?utm_term=circus+theme+music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449771/normal_6023d796d14b4.pdfIn PDF document text
    • https://fesunoxatufaf.weebly.com/uploads/1/3/4/5/134519878/tevugapun-kagilevaxe-jemolu-suridefazawis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420476/normal_5fd7efaf76bfd.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4455673/normal_60b62e0d436fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378605/normal_5fec942360fc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_6038151b44815.pdfIn PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/takugijuvomato-lizedazi-doxipitimeno-bufuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369305/normal_5fc6d59b8f8d4.pdfIn PDF document text
    • https://kalaxokesipak.weebly.com/uploads/1/3/4/8/134888683/6444849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444356/normal_603a24a4695ec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3305bd28-7a69-49e6-b7f9-85b6908be00a/bofodetobagita.pdfIn PDF document text
    • http://mepijewaj.pbworks.com/w/file/fetch/144426576/58633489548.pdfIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/temiso.pdfIn PDF document text
    • http://mutoteja.pbworks.com/w/file/fetch/144505806/tozivosekupewoxebumokude.pdfIn PDF document text
    • http://gozuwef.pbworks.com/f/63549331284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4d823eb-d256-4efb-b277-f8936df2f905/vaxoboriselif.pdfIn PDF document text
    • http://fufitan.pbworks.com/w/file/fetch/144557949/47724974962.pdfIn PDF document text
    • 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF542 4704 bytes
SHA-256: b65dae20e3bcead9f0750b60160d8b7bf7110e5165251889e3b7258a54eaacee
font_01_sfnt_off00010511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10511 13104 bytes
SHA-256: 6bad47492500632903949f0415f8af36c51addc1ccbfb7f0cd7e21d2fbaa5bbb
font_02_sfnt_off00012f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F93 16368 bytes
SHA-256: d77ab1709f18b18c4b51b549c5d8eaa1ec1bc1997a10e7ec9b63683db27af343

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