Malicious PDF — malware analysis report

Static analysis result for SHA-256 f336aaee25390533…

MALICIOUS

PDF

41.8 KB Created: 2020-08-06 15:36:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49cd19a931b50986cf70572b26803434 SHA-1: 84b1612a4bcfe1f5bb4c513006e09f978911213a SHA-256: f336aaee253905333b902889f144c111ecfc548feb89ab01007828973bfe8850
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=neuralgia%20del%20trigemino%20tratamiento%20fisioterapia%20pdf'. The document body, though heavily corrupted, contains fragments of this URL and other Shopify URLs, reinforcing the link-based attack pattern. No scripts were extracted from this sample.

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/wb?keyword=neuralgia%20del%20trigemino%20tratamiento%20fisioterapia%20pdf In PDF document text
    • http://fobukon.gcaseyphotography.com/uploads/1/3/1/6/131606407/titix_mavipo_tivawinej.pdfIn PDF document text
    • http://files.attleborodems.org/uploads/1/3/2/6/132695476/226a7db.pdfIn PDF document text
    • http://files.thewildwaycoffee.com/uploads/1/3/0/7/130739480/sobuzipo-wonutaduv-woganawe-xofudefiloma.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/1/0431/7180/7394/files/dawewisazarif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/satofekefekuwozavobijogut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/vuxutero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/nagizejufamina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1448/7207/files/despotismo_ilustrado_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/gerogatofugepowej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/xunepixekowol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6580/2905/files/26433631237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/57615241116.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8340/6239/files/sysmex_hematology_analyzer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9942/2881/files/88148618982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5136/9127/files/21863709712.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_off00006157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6157 5328 bytes
SHA-256: 100e601af3c73a608e3f9367eff1b75ffa47828fcdee87f54034cade0bcd5c73
font_01_sfnt_off0000736a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736A 11280 bytes
SHA-256: d6fc3c3f88a7c5ef9d9ad9a8b41401913371993b7d0ba18183710b877011acec

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