Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bcbcf61b6322f3a…

MALICIOUS

PDF

42.7 KB Created: 2020-08-06 15:14:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5390b16e72508830bd10ecc196afbaff SHA-1: 980e168a0bfa74003b964000affcd5a460084fa8 SHA-256: 9bcbcf61b6322f3a97ae694d4e35df240c216ce1e0b814accc42a7006982314d
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body and embedded links suggest an SEO poisoning attempt, using a medical term to attract victims. The primary malicious URL is 'https://ttraff.com/pify?keyword=evento+vascular+cerebral+hemorragico+pdf'.

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.com/pify?keyword=evento+vascular+cerebral+hemorragico+pdf In PDF document text
    • http://files.ijumpsportsmedia.com/uploads/1/3/0/7/130740221/7999568.pdfIn PDF document text
    • http://files.gusu2cure.org/uploads/1/3/1/4/131453387/bdc808697.pdfIn PDF document text
    • http://files.smlwa.org/uploads/1/3/0/8/130814189/fa961b46924f3.pdfIn PDF document text
    • http://files.pandora-pilgrim.com/uploads/1/3/0/7/130738790/gudirosolu.pdfIn PDF document text
    • http://files.littlebluebowphotography.com/uploads/1/3/0/7/130738720/9436b1c86093213.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/1/0430/4296/3613/files/xufulubavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7442/8829/files/ratozuvorujimibewesejava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/pathophysiology_of_heart_disease_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6660/3158/files/morosupuxogopaxekijav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/85906525187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/99527299471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/the_biology_of_belief_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0587/8167/files/18094608385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5085/0709/files/14822503812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/gojukadulefefivofupefopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/69142841408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/vuruxakovorikiza.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_off000066fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FE 5724 bytes
SHA-256: 8ec447352d59b5e8bc6f0f3b74852114d4d66caa4c75f7160995a1371760bdf3
font_01_sfnt_off00007a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A53 10352 bytes
SHA-256: 14850ba6a1ef435257eba7c58b59c1b31dab8f9c0a38d15b99642ed6226f62a5

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