Malicious PDF — malware analysis report

Static analysis result for SHA-256 9049919426f27bc2…

MALICIOUS

PDF

70.7 KB Created: 2021-02-22 08:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6846520f4c9dba3bd27298fcc67cb7fe SHA-1: 5be054d86d1376736854647de4d6d51e9a48cea8 SHA-256: 9049919426f27bc28dfcc41f5324be6a875b9bccd3ac4d34d26d4776c7442a68
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://maypoin.ru/wix?keyword=osborn%2527s+auto+world PDF link annotation
    • http://renijulemigato.iblogger.org/68929030102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480581/normal_60163ab8d216c.pdfIn PDF document text
    • http://kekemubitaf.iblogger.org/59196917308.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415051/normal_5fe19b6dd3f43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425760/normal_5fcd65be0da33.pdfIn PDF document text
    • https://levavepisemewo.weebly.com/uploads/1/3/5/3/135303450/558461.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jigiwema.epizy.com/mindful_breathing_meditation.pdfIn PDF document text
    • http://putetudufotu.rf.gd/lake_michigan_chicago_beach_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/juboved.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/443218740.pdfIn PDF document text
    • http://tumofif.rf.gd/emulator_gameboy_android.pdfIn PDF document text
    • http://zigimavabixexib.epizy.com/zifute.pdfIn PDF document text
    • http://tezebidurob.epizy.com/pewademe.pdfIn PDF document text
    • http://wotonopeg.epizy.com/75466237402.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E9 5112 bytes
SHA-256: edb172c5fe9608c479c909c445b97a3ec334d20e737cd4fd9abf67c2cab9344d
font_01_sfnt_off0000e969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE969 10628 bytes
SHA-256: e7cadfc73383aec667053c667c12f34816b7545bfa4beb94f00dc4fad3185887

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