Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bee804ba17e1d99…

MALICIOUS

PDF

72.2 KB Created: 2020-12-27 04:39:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 6575b43cfa3406050f8c920861af68f6 SHA-1: 0c803f7f1fdc8ee425128c2e4daa210d5bcfba44 SHA-256: 8bee804ba17e1d993555998752972f6d5f2dc86637b9dddf9dd0f0e83b620f91
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffset.ru/wb?keyword=intelligence%20health%20bracelet%20app PDF link annotation
    • https://turonobofudub.weebly.com/uploads/1/3/4/4/134463989/9fdf056d3e.pdfIn PDF document text
    • https://rubajamepufukav.weebly.com/uploads/1/3/4/4/134432722/6585895.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/7Bmnzgh/you_break_it_we_fix_it_san_antonio.pdfIn PDF document text
    • https://gimitowogavu.weebly.com/uploads/1/3/4/7/134746983/godikesi.pdfIn PDF document text
    • https://varudigenaka.weebly.com/uploads/1/3/4/5/134597471/bakidesipivomu.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/jenavilinab-dofivefimuv-tovefidibanefi.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/vasawinozi_panumazowisaze_tujaponezibino_wajivuvoxejo.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/jhdjhhb/duputavapefudu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/1974142719.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/3020172984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7ef6182-d9d7-4214-ac4c-fdeaf2d5a453/gizelefidefezitokenudo.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/lozatakizur.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/50765490927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/626e76bd-5d41-45f7-aec5-5e70f15aafbf/tinunexowa.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/p3_quiz_answers.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_off0000df2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2D 5096 bytes
SHA-256: 09407e6b6248cc3b20e2886d40ca0b62dfda0ed6b3b9d10914edd8eddbf35800
font_01_sfnt_off0000f077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF077 10348 bytes
SHA-256: 4a0acf5f0fa25fcd471f00be0c425970376b198f07d6d4711549bb90a79abd79

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