Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3e6c69c7cbdbeb5…

MALICIOUS

PDF

72.5 KB Created: 2021-03-23 22:51:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9a67aa670b7dcff51b0e69c5a022eec SHA-1: 2a1304da2c6f59c413b4834674f6262a616f2209 SHA-256: c3e6c69c7cbdbeb507b67ecdcfe084eeace19a09f6d294b43034763373240afa
186 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. It contains a large number of external links, many pointing to disposable domains, suggesting it's part of a link farm or SEO spam operation. The primary malicious URL identified is https://lozipotod.ru/123?utm_term=global+agricultural+information+network+report+2017, which is likely used to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://lozipotod.ru/123?utm_term=global+agricultural+information+network+report+2017
    • https://static.s123-cdn-static.com/uploads/4446494/normal_5fef183f210ed.pdf
    • https://cdn-cms.f-static.net/uploads/4413117/normal_60421bc89266e.pdf
    • https://cdn.sqhk.co/kafufojugure/hf77pgj/my_at_t_prepaid_account_login.pdf
    • http://nigavereke.mygamesonline.org/english_malayalam_calendar_2020_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4413587/normal_5fd27733e1d8c.pdf
    • http://myfavoritesun.xyz/dones_del_espiritu_santo_para_nioshmzzz.pdf
    • http://revilokepudidu.mygamesonline.org/60902362681.pdf
    • https://cdn.sqhk.co/lenawemijixe/g8MDkBf/vovujonegena.pdf
    • http://wasegulom.mygamesonline.org/xukope.pdf
    • http://world-wildshop.com/71069380039veddy.pdf
    • http://pl50off.info/principles_of_effective_business_communication1irl4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://9e705916-5bde-4eb8-be9b-8b3e910fbaf8.filesusr.com/ugd/c7a620_3c0bf90e60a0429b82d0b719b1f61d69.pdf?index=true
    • https://f6180879-d31b-499c-8e42-fead7842c491.filesusr.com/ugd/007227_4bd132efe75d4404bdee3beba799dbdf.pdf?index=true
    • https://ae0ecf71-49bb-4ac4-bba4-d0f2a20d1af9.filesusr.com/ugd/668a47_0094892a8e884dba9a1b72ae60a23d20.pdf?index=true
    • https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_dac22d531a564b04a29b204642dc3215.pdf?index=true
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_788cac6c51bb43baa5319eeb56f97592.pdf?index=true
    • https://97e6e6c8-040d-427c-ad66-6ef02350ae38.filesusr.com/ugd/9c523c_4be95b6b2d404092b6f66df9c12ca4a2.pdf?index=true
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_e2236db1d39846eb9b1ec4f5c5bfe085.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d92b.bin
522d5a8f0b803182fce1b93b50f26c4a9479b5c6f428f39d813a1418f18044d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD92B 5888 bytes
font_01_sfnt_off0000ed52.bin
f7efd19b5c05cf7f8a57933c24b6b5d012f830cb3920611f9c58557b2e02803e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED52 12316 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.