Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06e27ea1c2b0ed2…

MALICIOUS

PDF

70.3 KB Created: 2020-11-14 03:56:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8d55218bc8c5ce3f23cc6b31e9571bf0 SHA-1: 1b22ea95d8baff07823213583a771d345d4dba03 SHA-256: b06e27ea1c2b0ed2f04cf9bf34612c1bbb687c25de50e937549cb90fc2da24d8
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains a large number of external links, many of which are likely part of a link farm, and one specific URL is presented as a search result for 'Bramman songs tamil'. The presence of embedded URLs and the overall structure suggest an attempt to manipulate search engine results or redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://trafftec.ru/aws?utm_term=bramman+songs++tamil PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375541/normal_5f8b14c578d5b.pdfIn PDF document text
    • https://kavimexidulivi.weebly.com/uploads/1/3/4/0/134040988/5300882.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/lusereseb-raxewiz-tiginu-vused.pdfIn PDF document text
    • https://gorijifezavu.weebly.com/uploads/1/3/4/5/134502749/35d1ebffa.pdfIn PDF document text
    • https://kusanogiwaxug.weebly.com/uploads/1/3/0/8/130873987/xovijogalosovo-filane-bofepewebibi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378425/normal_5f8a5e9eb5156.pdfIn PDF document text
    • https://jononosafopobof.weebly.com/uploads/1/3/4/6/134649788/fogumagowa_jigejiwebiwevi.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/ee6e993d-c97b-42fc-8628-2e142cf00380/doxoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/505c696e-acfb-47c5-a503-ad00b2cd2a76/double_down_casino_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66526440-6131-4c5b-8c76-ff13766cb0d6/sisefoviborivus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16b975d0-b954-4f10-805c-c516e9d6a13a/converting_si_units_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29f6621f-0c5c-41b7-b755-db25751c3585/50_cent_disco_inferno_mp3.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_off0000cacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCACD 4724 bytes
SHA-256: d35209833c5b64dca3c62ae601326a0969a7c521b968e7b486708dd832a3e77f
font_01_sfnt_off0000daa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA9 10568 bytes
SHA-256: d6c4a66f48e7aa5c5d1b7113bd63ae64223b9c2103d23cf3d96fad3f620192cc
font_02_sfnt_off0000fea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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