Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f5b713627ec4fba…

MALICIOUS

PDF

75.4 KB Created: 2020-12-25 17:25:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 623ba5c577f1fe38d73b21e3a6b2c291 SHA-1: 702da11d4d280306f7e370914c35a988af9bcd5c SHA-256: 6f5b713627ec4fba9d732bc202f6a19fb6dc280825f0949a1712706e57656c20
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on file-sharing services and appear to be part of a link farm. The primary malicious URL identified, 'https://traffset.ru/strik?utm_term=ben+10+alien+battle+royale', suggests a phishing or malware distribution attempt disguised as search results. The ClamAV detection and ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/strik?utm_term=ben+10+alien+battle+royale PDF link annotation
    • https://sopudediliwaweg.weebly.com/uploads/1/3/4/5/134587721/xefasuditasoxer.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/1789122.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/1441719.pdfIn PDF document text
    • https://nunodovov.weebly.com/uploads/1/3/1/3/131380210/tisijokujisa.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/1420882.pdfIn PDF document text
    • https://lowaribopuvege.weebly.com/uploads/1/3/2/8/132814272/kusiwekixoli_munobepot_lulelakixawija_bofemuram.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/dorobukasawituw/burufi.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/27020908383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93d36f6c-4fa0-4736-be92-577e36d34b2e/badger_100_disposal_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/67550429380.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/43887595436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/274edcd8-447f-49d5-829d-ee82f798b0d6/94728422372.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_off0000e9f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F5 4984 bytes
SHA-256: 35bf5537997479f84dd99c94aa157fa5e10013a5f2888651db1fdbd3d79026d7
font_01_sfnt_off0000fb05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB05 11604 bytes
SHA-256: b6a50c69080a4461c875c0c4e07e49ea460f6b02ff1e6ffad4f60de82a8ac07f

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