Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd42f13de6a2cde…

MALICIOUS

PDF

49.2 KB Created: 2020-07-28 21:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5779c1fd46d218407e3865dc724ab5eb SHA-1: e7f3e23da43769ce110fd23d6597fe7118f72112 SHA-256: bdd42f13de6a2cde105d3a6a7a91955a1246cd4204510333810b6259eac6c206
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One of these links, 'https://ttraff.ru/pify?keyword=also+sprach+zarathustra+pdf+strauss', is flagged as malicious, suggesting a redirection to a harmful site. The presence of many links, including those hosted on Shopify, indicates an attempt to distribute malicious content or conduct phishing operations.

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=also+sprach+zarathustra+pdf+strauss In PDF document text
    • http://files.ironpanjapanesekitchen.com/uploads/1/3/1/4/131406202/5c9b9acffa56.pdfIn PDF document text
    • http://files.knowyourbusinessplans.com/uploads/1/3/1/3/131384300/cc507e90ff5c.pdfIn PDF document text
    • http://files.murphybocce.com/uploads/1/3/1/8/131857758/08f34ef512302.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/1/0431/6836/6760/files/serigadubonel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/satodexolunakaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/kodofonipofuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/lopotawexevujepemonale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/kesitefuvibetebegize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5111/4908/files/sugolexenelubolija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/35672731056.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/pufunewanunazimimume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/vewulalututo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/37202237676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/34627615336.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 8

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_off0000820b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820B 4892 bytes
SHA-256: 287358b1c6d731d4c30018edccae80d7df81c7a3f23330ae613639cb6e116778
font_01_sfnt_off000092c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C8 10780 bytes
SHA-256: 7c4bff8950b0868287d6b36043456677a7845fe59adaa758c97c0934eb6982fe

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