Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca7f8ace643c2816…

MALICIOUS

PDF

73.2 KB Created: 2020-11-18 04:13:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7bb8000b13427282cfb66283a75a5f28 SHA-1: d411081d8797a6aa9cc8f5fb24a62390b9a9737b SHA-256: ca7f8ace643c281671aaba052bf96ccbad9ef29560b7596d5129b1bc620262a9
294 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary malicious URL identified is traffmen.ru, which is likely used to funnel victims to further malicious content. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Fake encrypted/secure-document view lure high SE_ENCRYPTED_DOC_LURE
    Document claims to be an encrypted or protected file that must be opened through a 'secure view' link, and the action link uses deceptive infrastructure. This is the secure-document credential-phishing carrier: the page imitates a secure-mail / document-cloud gate while the link leads to a harvesting site. action link to abused redirector.
  • 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://traffmen.ru/123?utm_term=ducane+gas+grill+parts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4447093/normal_5faf9e42ef7b2.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/467057f3294d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407060/normal_5f989231d37bc.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/essential_oil_storage_case.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/bududamipawepazo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/c470da65-d3c3-4d07-a0a2-9fd48de7052c/76598067453.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a0273f5-612b-4f97-8222-84bff938e902/tm_gi_qua_m__ninh_thun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03fd4cb3-3136-42f6-b4c8-1c6ee3af23f6/rabuwigiwano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c59fca89-5eea-47d2-9616-9132541d2cab/23595564845.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/678a2608-2172-4f67-9637-02d18639fbde/vepibaxenobovakegexus.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2DB 5100 bytes
SHA-256: 11d2ca71a7949254e51b80bc51477109ba6a251108e909024d17309188225965
font_01_sfnt_off0000d442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD442 9944 bytes
SHA-256: fed1a6582c2a2863be3c399327ff66b06fd343f31a2a0250b575e60fe0dd5ca8
font_02_sfnt_off0000f070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF070 11184 bytes
SHA-256: 80f45486c0c63e2aa9143653ee4cfcb311155f0100e388604d7663c8b9ea56a7