Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d851668486e8639…

MALICIOUS

PDF

45.1 KB Created: 2020-08-10 18:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 002d3e8c23161b326a3b8137a863d904 SHA-1: 250dbe1ea22d016c80caf0237845b9db81df23c5 SHA-256: 0d851668486e863965ccfbfc8610f1a09c629fe3785206f48bcf5877788f3088
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as malicious redirectors or part of a link farm. The primary malicious URL, 'https://ttraff.cc/pify?keyword=aneurysm+clips+pdf', is directly linked to a known malicious redirector. This suggests the document's purpose is to direct users to potentially harmful content, likely for phishing or malware delivery, leveraging a 'free download' lure.

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://ttraff.cc/pify?keyword=aneurysm+clips+pdf In PDF document text
    • http://files.aquastarssynchro.com/uploads/1/3/0/8/130814390/cc3f89.pdfIn PDF document text
    • http://files.acaringcommunity.com/uploads/1/3/1/4/131437119/4679490.pdfIn PDF document text
    • http://files.cckidsfamilies.com/uploads/1/3/1/3/131381539/9366823.pdfIn PDF document text
    • http://files.rydalmerefc.com/uploads/1/3/0/7/130775357/ce1539ca91f5.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/1/0432/4586/3067/files/arabic_ocr_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/causative_verbs_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3453/files/tipos_de_incendios_florestais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/lefijopusujinanoguke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/91819570984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9947/2550/files/sakawifapepivixotibiwafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/87165595167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4028/4573/files/89695136347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/59832482676.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 5180 bytes
SHA-256: 94e49c55ea8ba6ddba3bc273449e31b3f8b9b1cc5a92a5d3555e1681f110b1d2
font_01_sfnt_off000084c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C6 10192 bytes
SHA-256: f304900bd614e5f25279ab76a8c930a06c4c941b7d1c97c5f6ad82c7bf547060

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