Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bcc35dd8fc21d8…

MALICIOUS

PDF

43.3 KB Created: 2020-10-17 17:12:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 0296b22e53e55e74bf5834a338202b8a SHA-1: 8b9688eb6a9dc1fcf4defdec95baefbe3690c1f5 SHA-256: 72bcc35dd8fc21d8c823c9b6e34d2c52de1e4028aefac80957ffc50c9b97365a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ggtraff.ru/strik?keyword=damon+brand+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377407/normal_5f8a56f8e31e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_5f8a11a200cdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5f88c1ce3f20f.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/8389781.pdfIn PDF document text
    • https://nudopimiga.weebly.com/uploads/1/3/1/0/131070212/vefevudosowaxasaguk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/malulupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0470/0022/3896/files/69269477307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/6460/7128/files/64720421504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8381/5325/files/87786392331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0284/2264/files/vejonakedaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2080/4511/files/12595832238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8fcdf46-a13e-4e1b-930d-913b3ad346e4/xiritusel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/927fd925-c688-4fc8-870e-92885aaf6114/21025998370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeed9950-5a10-4154-b227-b9d53f4b563b/89817197729.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d97a193-d6c1-414c-9df0-e9536e30e4ef/mobawemanamajeriwop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/320445af-10c2-46f5-ab72-42f1da6a8bf2/17078363127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8893bc2f-83a4-426e-baa5-e0b0bd81b178/36777432881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c134012-44c1-4846-af55-885e6cc6294f/ronulaxebepukogemibun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc0e60c3-9998-4dff-8df8-0cb19f9cd012/83384500877.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55aaf32-736d-4ecf-851d-b3034114e183/63711044700.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_off00006351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6351 5116 bytes
SHA-256: 6d8bbd8cf72f6b8e329e818b07c4d65d4c2aeb524e7cf3ccd14df4c944e1848b
font_01_sfnt_off0000749d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749D 13792 bytes
SHA-256: 06315063a50a0c612b8e34f7e5289e8f3673ae5e54bcc4ed1fae46cc892c87be

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