Malicious PDF — malware analysis report

Static analysis result for SHA-256 5afca6b09da358d5…

MALICIOUS

PDF

68.5 KB Created: 2021-01-01 08:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 376e8bab04db28c990b7b4fb2f221494 SHA-1: 501a995d887fe6ac1dbd37942be969f2ee0732ba SHA-256: 5afca6b09da358d5d9b14eda12d630f04d4e3f0b1e6d531f449761f8d6e9af5a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting it is part of a link farm or phishing campaign. The primary URL, https://trafftec.ru/strik, is likely the malicious destination. No scripts were extracted, but the PDF structure and heuristics indicate a malicious intent to redirect users to external sites.

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://trafftec.ru/strik?utm_term=cross+stitch+for+christmas+free+pattern PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f89a4c12d843.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f9235fec0e75.pdfIn PDF document text
    • https://lejigatoni.weebly.com/uploads/1/3/1/8/131871980/xapal-mozuxoxuvub-wutovodaveve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_5fe941964d39b.pdfIn PDF document text
    • https://cdn.sqhk.co/midipumep/IEQKtgh/67569603912.pdfIn PDF document text
    • https://cdn.sqhk.co/rijakobebux/XRjHOkD/bitujemasewuxabege.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b42558c8-8e65-47cc-a063-4bf07c916e38/31390169872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dab7c1e0-6a9e-48ff-b336-e8c6f32779d1/kaxakuziwijejajoxonimewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4820424-f1b5-42aa-a3ec-d1b1546179e4/7599110898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5e9a7d5-96f4-45d3-a934-b1a87be1156e/furedelitotevuval.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e585a4f9-5cc3-4136-be7a-0da81fdd0d16/nightfall_on_the_river_des_moines_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad34fad9-3550-4fc1-8ddb-f7834621f3ad/disney_premier_passport_price_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b32524e3-b8fa-4a3b-87ad-ab47534a00b0/disabap.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_off0000cb1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1D 5128 bytes
SHA-256: 7a52d0addfd840b802823c2fc7a9a308790f6d0b27b99993daf0379181201c1b
font_01_sfnt_off0000dc62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC62 13008 bytes
SHA-256: 866cf59de9a2078521948c05ebceecf36f13fe258361ebaae5128ce3b1a2bac2

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