Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9f4fcb01f067ad…

MALICIOUS

PDF

101.6 KB Created: 2021-03-31 07:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c07c481ca3980ad896c6d18c13094e4 SHA-1: 2bd612a67422321f926066c92d43c34f73238da8 SHA-256: fe9f4fcb01f067ad542a5ff382a7304b2c08d28cf9b7ae5262ece559656fb6eb
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF SEO Link Farm', suggesting a malicious intent to redirect users to potentially harmful websites. ClamAV detection and ML classification strongly indicate maliciousness. While no scripts were explicitly extracted, the presence of numerous external URLs points towards a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 5

  • 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
  • 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://nipisod.ru/award?keyword=absolute+monarchy+in+russia+pdf
    • http://confirmyourverifiedbadge.com/basic_dungeons_and_dragons_modules_5e0woku.pdf
    • https://wixoxane.weebly.com/uploads/1/3/4/7/134734379/zutusimufij_dibevurorafe.pdf
    • https://static.s123-cdn-static.com/uploads/4378620/normal_5fe5a560c9619.pdf
    • https://cdn-cms.f-static.net/uploads/4444875/normal_603a700cbf0cd.pdf
    • https://kexulisil.weebly.com/uploads/1/3/4/7/134762119/c0ae39b32a6.pdf
    • http://help-feedback-amzn8.xyz/79598088650ovf9z.pdf
    • https://cdn-cms.f-static.net/uploads/4465149/normal_601a49cbcd7a2.pdf
    • https://wamogipoko.weebly.com/uploads/1/3/0/7/130739383/nusasawopife.pdf
    • http://pravagims.net/60645690288sowpq.pdf
    • https://febotobelem.weebly.com/uploads/1/3/0/7/130739539/tugalineledezipave.pdf
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/vemupodewojat_penovufa.pdf
    • https://cdn-cms.f-static.net/uploads/4463275/normal_5fd9aeff64aac.pdf
    • https://lamonide.weebly.com/uploads/1/3/4/0/134096931/1643277.pdf
    • https://pinenovi.weebly.com/uploads/1/3/4/5/134509314/lizatadudomuzu.pdf
    • https://bunosepe.weebly.com/uploads/1/3/1/3/131379858/588e447d.pdf
    • https://vawavujak.weebly.com/uploads/1/3/4/3/134350312/semiwozir.pdf
    • https://xubidanata.weebly.com/uploads/1/3/4/8/134895671/5800749.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jazuravazaguz/condition_inspection_report_residential_tenancy_bc.pdf
    • https://uploads.strikinglycdn.com/files/bc3abdb2-aad3-44d8-ad21-c7a5aa99b615/adobe_acrobat_pro_dc_free_trial_mac.pdf
    • https://s3.amazonaws.com/silubebebefuju/xebororimedeli.pdf
    • https://s3.amazonaws.com/sazomo/how_the_spanish_flu_was_controlled.pdf
    • https://uploads.strikinglycdn.com/files/7ebc6b19-da16-4ade-9d8e-17058294bd5b/crossword_puzzles_help.pdf
    • https://s3.amazonaws.com/wamatasamegu/earth_charter_indiana_jim_poyser.pdf
    • https://uploads.strikinglycdn.com/files/d76f1169-cd7c-4bbd-882a-810e5d564be8/how_many_carbs_should_i_eat_a_day_quiz.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001406e.bin
c36a3b2c9a8c001e61ac2d4a44ba88d30c079841f35dfdb10748e3718414baa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1406E 5508 bytes
font_01_sfnt_off000152f4.bin
e55ecae8efccc0335c5bf694f2a53aa9e64ceccb7718630243226bc8a6073cef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152F4 11424 bytes
font_02_sfnt_off0001795e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1795E 4324 bytes

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