Malicious PDF — malware analysis report

Static analysis result for SHA-256 0913fa1c28d5a91a…

MALICIOUS

PDF

40.9 KB Created: 2020-08-06 16:19:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa92299cac2c60c29f5b7589697c1f42 SHA-1: 53a95a5e05304f073e6c926c4351febd680f3582 SHA-256: 0913fa1c28d5a91a34dac5d28d2e64830b82fecfabec83c892069c8a6d2fae9c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This indicates a phishing or scam attempt designed to lead users to harmful content.

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.ru/pify?keyword=cordon+umbilical+cuidados+pdf In PDF document text
    • http://files.frontlinemissionsa.org/uploads/1/3/0/9/130969791/fogaji_fifuxizakifoju_silomaz_lixefolo.pdfIn PDF document text
    • http://files.michellesamuelsolicitor.co.uk/uploads/1/3/1/6/131637570/tuxukaj_xazusozozem_dobusaxodezelof.pdfIn PDF document text
    • http://files.weymedia.net/uploads/1/3/0/7/130776110/5391857.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/1/0432/8125/2512/files/67013326425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4944/2715/files/pam_anderson_tommylee_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8223/6583/files/89823469753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7160/2849/files/dokuxerokipikulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/ketojopulixusor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/18136259281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/94430357470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8793/8211/files/89390249054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/65249817441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7530/1539/files/buteogallus_anthracinus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/tewufesi.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 5

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_off0000623a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623A 5344 bytes
SHA-256: aa6c610cb7842246a6df160ec98b5d47f05e7d2955c5c53072ec77dc8b26cb7a
font_01_sfnt_off00007442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7442 10244 bytes
SHA-256: b932f49969e94555ae4dea11092b4df4a334767542506f1e333746e5356be4da

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