Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2bc0088c23419f…

MALICIOUS

PDF

76.7 KB Created: 2021-05-20 15:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a864c38e6f36169cf8cfb209fb28acd3 SHA-1: 1fe1fd4e65469830f07cbd8b29c158ea969b326e SHA-256: 0c2bc0088c23419f2dca112eb4a5041a53a35f42151d9b803130c7fbeb5d4b6d
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://zajinet.ru/strik?utm_term=how+to+claim+scratch+off+lottery+tickets+california PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403938/normal_60600feedb011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501503/normal_60433dcd4635a.pdfIn PDF document text
    • https://mabatuba.weebly.com/uploads/1/3/5/3/135303696/4835972.pdfIn PDF document text
    • https://bageriwiko.weebly.com/uploads/1/3/2/8/132814239/4176001.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410722/normal_5feba3bdb7c8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472188/normal_60691ff17e654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368736/normal_6030cd88be19b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410730/normal_6031e6144c599.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450504/normal_600888437ce48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419425/normal_60338302b3e64.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/xarojapi/lg_inverter_direct_drive_9kg_oe_error.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/6397441099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4027f11-2272-48e1-a453-aa2d73e1fbb5/59182302326.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/vadarobujaxizikefezar.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/kepepojituwazuxof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b511672f-f9eb-4c83-aae1-18d4879e2ffd/mobile_application_development_life_cycle_methodology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/728efb33-f46d-4a0f-a9b4-9169e1f05d46/14334196938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5381093e-0e54-4831-b68f-66277cd9efbf/85029465785.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/kubenigojimevepizituvudap.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_off0000eb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3D 5340 bytes
SHA-256: 8189acbc5597f5d75b39d0a6f871476ec63f56d356e692bbd7cd8bceca840c69
font_01_sfnt_off0000fd55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD55 11148 bytes
SHA-256: f1ba3ab197247bc4127903099c5452c50c259c8204eef10975f784b3e654536c

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