Malicious PDF — malware analysis report

Static analysis result for SHA-256 69eee2b80913f0de…

MALICIOUS

PDF

75.4 KB Created: 2021-02-26 10:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: aee0fabb733e0066c774f246d75bff41 SHA-1: 67ffa5ee216517f05ffb479eb82cd79c485ca29b SHA-256: 69eee2b80913f0deeee32f4d257dff0c2c8c200765e82c8ad6c56ff8a445100d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of creating numerous links on disposable domains, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the overall structure strongly suggest this document is designed to redirect users to malicious sites.

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://fokemale.ru/wix?keyword=career+information+math+worksheet+answers PDF link annotation
    • http://retamos.mygamesonline.org/kotor_walkthrough_tatooine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490127/normal_60118866caee6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461204/normal_5fcc420cbd6d2.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/lefevexipojazojo.pdfIn PDF document text
    • https://jisixeda.weebly.com/uploads/1/3/1/4/131409884/nunuwisipilufed.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/manual_de_organizacin_y_funciones_de_una_empresa_comercial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465941/normal_601be19aead79.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/manual_camara_canon_powershot_sx510_hs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471474/normal_5fd65324ac66a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369774/normal_602eef108367d.pdfIn PDF document text
    • http://delinapod.mypressonline.com/how_many_books_are_in_the_wings_of_fire_series_in_order.pdfIn PDF document text
    • https://kenibojowosude.weebly.com/uploads/1/3/5/3/135324683/5719374.pdfIn PDF document text
    • https://toxujubew.weebly.com/uploads/1/3/1/4/131437446/80a7b9873c914.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vexabimumemig.atwebpages.com/how_to_reset_my_time_warner_remote_control.pdfIn PDF document text
    • http://litorow.myartsonline.com/what_is_the_meaning_behind_the_movie_coraline.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/mijojifipegekoresikogama.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/luxukorupi.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/tenuzomajopafulazes.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_off0000ea16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA16 5036 bytes
SHA-256: ddef3ef81327c2488021352ade745f018eeec98681dfdc29ad7e6f482dca5030
font_01_sfnt_off0000fb1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1F 11024 bytes
SHA-256: 664b84bc8e8fbb9b7b46e084e0c14b4372eb04aa2ed7878100f8056a26f0154f

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