Malicious PDF — malware analysis report

Static analysis result for SHA-256 060a2519662ca673…

MALICIOUS

PDF

88.0 KB Created: 2020-12-28 11:43:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a6a5066bc27b5dcc70f1a59b9bc6676e SHA-1: e9e0b3614d335edab8fa8632b3977a97aa98110c SHA-256: 060a2519662ca673a526350a55ac663946e5eec93d7b274cecc71675d87ae059
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous external links, many of which are part of a link farm designed to appear as legitimate content, such as 'battle royale all seasons hd wallpapers'. The presence of a PDF SEO link farm heuristic and a high ML score indicate malicious intent. The primary URL, 'https://trafffi.ru/strik?utm_term=battle+royale+all+seasons+hd+wallpapers', is likely used as a redirector to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/strik?utm_term=battle+royale+all+seasons+hd+wallpapers PDF link annotation
    • https://jufozovujibozom.weebly.com/uploads/1/3/4/3/134360308/175885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f89bd62919dd.pdfIn PDF document text
    • https://diwijavel.weebly.com/uploads/1/3/4/6/134691177/6858008.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454286/normal_5fc505143a1a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425487/normal_5fc693d425886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388283/normal_5fb4281390b80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443342/normal_5fc9b21d3a289.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409616/normal_5f943828ac2e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368746/normal_5fbe1b00ef0dc.pdfIn PDF document text
    • https://zotadipijipas.weebly.com/uploads/1/3/4/4/134467791/ec8f12f.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/wegugus/davul.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/osteoporosis_indonesia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1966d29-da3d-4ee2-bdd4-31f2def567a0/vevagozedunafezike.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11966 5288 bytes
SHA-256: 72c6b79674bc9700b2255581aabc480883427365995a24eeb89c7417bd7d4bb3
font_01_sfnt_off00012b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B75 11664 bytes
SHA-256: a9779b68c5cc9f2bf222fd11032b12456a8c768af2d22ec7cc077bb60f9875c2

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