Malicious PDF — malware analysis report

Static analysis result for SHA-256 e055e85f337f9430…

MALICIOUS

PDF

73.4 KB Created: 2021-01-05 21:19:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 8bb9b7869dabb7a35637cc08fc3e1c52 SHA-1: 9a0a18614fb2702c19a2f341bee9ca6d06aff281 SHA-256: e055e85f337f9430a2b74fcd7332d0d6a7fe0054833149ac49119fe3e14b68e9
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDF files hosted on various platforms, suggesting a link farm or redirection mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest it's designed to redirect users to malicious content.

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://trafffe.ru/aws?utm_term=mla+citation+format+book+chapter PDF link annotation
    • https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/poxibigajovotoxitewa.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/ebRgKia/rush_space_invaders.pdfIn PDF document text
    • https://toxoladosa.weebly.com/uploads/1/3/4/4/134479392/lugop.pdfIn PDF document text
    • https://xomunulozesini.weebly.com/uploads/1/3/4/0/134018183/kadijobivefabe.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/lumixi/wabajutakupixulilitezow.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/sunexegav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fa3c0b9-0039-40bc-bd14-80ac9efb2f5e/68188466531.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/idrivesafely_unit_6_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/designer_bed_sheets_online_purchase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff431041-81bc-433b-8580-a0d2ab73dbaa/vubivarotixiwupojipuka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e437a64-3095-48c0-bcec-9a97c3a40bb8/snapchat_girl_filter_name.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d2dbeab-ab1c-4505-b151-a0833407ea63/somesoguvogiluratudozaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11565c91-a30e-4d42-ab44-7c115e108447/saxaxamovomo.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_off0000e085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE085 5288 bytes
SHA-256: 05684078563b07be2693905b20730058313e6204d9f60307142709f38afa391c
font_01_sfnt_off0000f263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF263 11464 bytes
SHA-256: ddcb5f7ca893d0238050e4d5e05caafe0b7c0a680d52a50533a51ec8e7289791

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