Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac17c00cc756b3e…

MALICIOUS

PDF

63.6 KB Created: 2020-12-16 18:31:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 585776b5ea1f925d735c424a147d20aa SHA-1: e508c59ed801165d498c343899ab28f5ff486b7c SHA-256: bac17c00cc756b3ee8437b114fde6112d23545cdc2d6f1d744e10fa6f8db6e6f
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a prominent one pointing to 'https://traffset.ru/strik?utm_term=elm+creek+school+maple+grove+mn'. This URL is flagged as a redirector, suggesting a phishing or malware distribution attempt. Heuristics indicate a 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK', reinforcing the idea that the document is designed to drive traffic to malicious sites. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'.

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.
  • 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://traffset.ru/strik?utm_term=elm+creek+school+maple+grove+mn PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f9b6ef1c62b9.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/tojikogidulusani.pdfIn PDF document text
    • https://vitaworitevazol.weebly.com/uploads/1/3/4/4/134484496/5366551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417327/normal_5fd7e7688c8dc.pdfIn PDF document text
    • https://sofowalomutupal.weebly.com/uploads/1/3/4/3/134310420/megazimegim_kiwajikaxawuku.pdfIn PDF document text
    • https://tapotupuj.weebly.com/uploads/1/3/4/8/134866757/98d7eb1fea38.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/degisapemifa/ciclos_de_vapor_de_carnot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00872578-1a8b-4e27-aa9b-3241eb7a8837/53211634935.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/26461308416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5767cac6-cc49-4351-9518-4d495c5629cc/nenageniwavujinabifawaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa38f972-15a5-41f7-b018-550bf523228b/81825801078.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5af24815-b07b-4b71-a317-2b90f4eea46a/kiriwan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3927f05e-fc36-4e16-a8ff-67d4831f3aa7/hikayeler_anton_ehov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb1cb462-f9a1-4f27-a244-925128cb3993/zexinewaturomokusixat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f82b4448-47af-43ae-917f-835b3aa7516d/mega_man_x3.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_off0000ba07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA07 5428 bytes
SHA-256: f105dd24404a1bb1b5130906cd1f9c20fd12bf50ec7e2399f9856ff60cd7ab78
font_01_sfnt_off0000cc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC64 11104 bytes
SHA-256: d4a1804610b810f210b1cecda92925901fe5ada3b3d127c7e5f9893d51fa0b4e

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