Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dad1a0516a3077c…

MALICIOUS

PDF

63.3 KB Created: 2020-11-19 06:55:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f1e008c6b5c9cd4b469450e8c6e00772 SHA-1: 536c395295d0c19d5c805eea55420d69c234028f SHA-256: 8dad1a0516a3077c7448d10e2b0ed56b122263e2762eaf82906ea1d0d76e8dc8
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many of which are hosted on disposable domains, suggesting a link farm designed for SEO manipulation or phishing. The presence of a URL related to '6th pay commission of maharashtra government pdf' indicates a lure to attract users interested in government-related information. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/aws?utm_term=6th+pay+commission+of+maharashtra+government+pdf PDF link annotation
    • https://nofevezim.weebly.com/uploads/1/3/4/7/134770192/dogijaxedolepa.pdfIn PDF document text
    • https://xogotosab.weebly.com/uploads/1/3/4/3/134327909/fezumupetanatag.pdfIn PDF document text
    • https://mobuzuwatajol.weebly.com/uploads/1/3/4/3/134310732/4445190.pdfIn PDF document text
    • https://jidedenevunuva.weebly.com/uploads/1/3/4/4/134498736/7879095.pdfIn PDF document text
    • https://dojarugakafep.weebly.com/uploads/1/3/4/4/134471698/42756d064f00a.pdfIn PDF document text
    • https://kuwesitupimanu.weebly.com/uploads/1/3/4/0/134095951/5912972.pdfIn PDF document text
    • https://tevuvusit.weebly.com/uploads/1/3/4/3/134373155/2058263.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/74d36ce0-2fd3-48ca-83a7-1dabc89f9d70/91183513774.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a48c013-8f7f-4383-abb1-766f2649004a/el_sistema_planetario_solar.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/magic_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d4232d2-9326-4914-9a03-18f2922d1fcb/60180257007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc640d03-c451-4678-825f-8923e09096c0/70003466131.pdfIn PDF document text
    • https://s3.amazonaws.com/betimugi/31840851065.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/ljs_nutrition_info.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aa2cf5b-4df0-4a1c-80e5-b92009326b15/kagejagobinazudokadodege.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/29692760326.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_off0000b958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB958 5760 bytes
SHA-256: a18bc90b8e59ea9389b935158571664838a143f6bde38b8309771b172c07a65f
font_01_sfnt_off0000ccdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCDC 10336 bytes
SHA-256: e12705a7cbf1b36deb972152c25e18adf573b0c1072611fcce7b474c476e4425

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