Malicious PDF — malware analysis report

Static analysis result for SHA-256 da9fcf6cea91e3a9…

MALICIOUS

PDF

73.7 KB Created: 2021-05-23 00:25:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 08102e6a3b7dfc4b99463d37413ed636 SHA-1: 2566384d798d2be6c1c214cdeca367704a2bc4a4 SHA-256: da9fcf6cea91e3a99bfe8762b95000035e2a0ae7213bc7c5d9f9e432bacf8335
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious phishing content. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or spam distribution operation. The embedded content, though obfuscated, appears to be related to online games and potentially lures users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/strik?utm_term=ant+colony+game+online PDF link annotation
    • https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/bivenopitaposif.pdfIn PDF document text
    • https://pefodiral.weebly.com/uploads/1/3/4/4/134476409/2590410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495837/normal_602531cfab7c7.pdfIn PDF document text
    • https://vudolipilenad.weebly.com/uploads/1/3/2/7/132741032/d1fc8c861f.pdfIn PDF document text
    • https://rijomedoniki.weebly.com/uploads/1/3/5/3/135399424/xezomuda.pdfIn PDF document text
    • https://xavilisepu.weebly.com/uploads/1/3/4/2/134235747/xipudowi.pdfIn PDF document text
    • https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/42ee4fb10.pdfIn PDF document text
    • https://zedodunojoponex.weebly.com/uploads/1/3/6/0/136083391/ratazadusidobofigebi.pdfIn PDF document text
    • https://xajekedifa.weebly.com/uploads/1/3/4/4/134469171/8914942.pdfIn PDF document text
    • https://tumunonapuve.weebly.com/uploads/1/3/1/3/131379134/c6f9366efb8.pdfIn PDF document text
    • https://pebuwopaduve.weebly.com/uploads/1/3/4/8/134853156/zidubusasixiram-tazebovo.pdfIn PDF document text
    • https://menafove.weebly.com/uploads/1/3/1/4/131438456/5965800.pdfIn PDF document text
    • https://kovunigok.weebly.com/uploads/1/3/5/3/135317038/tewuvilewof-lapiluwog-zoriwejimivetos.pdfIn PDF document text
    • https://galuxenezinex.weebly.com/uploads/1/3/4/4/134437763/nupowuxag-welexibolujiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476142/normal_601718a819ef0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387571/normal_5fcb4637b2586.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dobesogum/microsoft_authenticator_won_t.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/womisojobunoliveviwi.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/how_to_use_a_jawbone_fitness_tracker.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/lilevuta.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e46f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46F 4936 bytes
SHA-256: a04443072e0d1d113323bb57937a78bba4c2d98719e5fc43e0568935f6fc79e6
font_01_sfnt_off0000f537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF537 10864 bytes
SHA-256: e31eb6d177ac7b194275fb3860f95dbb50ae2f07e4922f6a8ebde27babc27367

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