Malicious PDF — malware analysis report

Static analysis result for SHA-256 80aca9bfb147259e…

MALICIOUS

PDF

85.3 KB Created: 2021-05-29 03:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e3c7495dffd8def469aa806575bad8d1 SHA-1: 9058b9f98f9abda07e4f3ee13377632d330e77e8 SHA-256: 80aca9bfb147259e3c3787ec300479eae76b8e2ee4f5b0632fc178f9e94e9727
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a high probability of malicious intent. It functions as a link farm, presenting numerous external links, one of which is `https://bologen.ru/strik?utm_term=angry+birds+1+full+movie+in+english+download`, likely to deceive users into downloading further payloads or visiting phishing sites. The document's structure and the presence of many external links suggest it's part of a campaign to distribute malware or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://bologen.ru/strik?utm_term=angry+birds+1+full+movie+in+english+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426547/normal_6069b6c30fed2.pdfIn PDF document text
    • https://lagubezawepafu.weebly.com/uploads/1/3/1/8/131856446/gexit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412905/normal_605d6f68d78ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374710/normal_600d5c5dde3f1.pdfIn PDF document text
    • https://gusinunizu.weebly.com/uploads/1/3/4/3/134380178/04b59492af0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477137/normal_605f72700f113.pdfIn PDF document text
    • https://rofetavagamufup.weebly.com/uploads/1/3/4/3/134373504/dozuxolul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450878/normal_5fde8bc58727b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389355/normal_602731d374858.pdfIn PDF document text
    • https://karoxenerom.weebly.com/uploads/1/3/0/7/130739074/8595593.pdfIn PDF document text
    • https://xemedibapasuv.weebly.com/uploads/1/3/2/6/132695509/difuviwoki-luwugasup-jugakutud-pogifejopi.pdfIn PDF document text
    • https://kowawixuru.weebly.com/uploads/1/3/4/5/134509215/32d380bc809.pdfIn PDF document text
    • https://koburuwojut.weebly.com/uploads/1/3/1/3/131378968/tijavidoxep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3886fb61-ec69-4818-a49e-f3d2a8c4112b/ritunoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ec826ed-b44e-47af-8969-7f6677d05654/goduponewekiwizopulobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31491f63-c067-4c03-a468-f61357469466/trx_workout_videos_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7047710-7024-4dde-8bb5-85b4e556d323/download_corel_x7_full_crack_bagas31.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c65ce837-2e9f-4346-9734-500dc19ced0e/94710596870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e592755-784f-42f0-9f51-b0d0671b290c/stephen_king_night_shift_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/854f39d4-7937-4df1-8c81-6b77fae41aae/is_tp_link_compatible_with_apple_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28a8d00c-c430-47c5-8522-14a00e360efb/55682936234.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10043 5560 bytes
SHA-256: e4df6c6bdeb95ab61df1648d65e5be4af980ec5d8116d384b241997e9edeb5a8
font_01_sfnt_off0001130c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130C 11332 bytes
SHA-256: bcc07f0dd9e1d85136fb913179db3fd1da2d5079ffffbf887723d6f2505d54d3
font_02_sfnt_off000139b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139B0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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