Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f0b3a494934ef7…

MALICIOUS

PDF

40.0 KB Created: 2020-08-11 17:17:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83e5005950034ff1c98ad774ee0a9299 SHA-1: eb17d462c6a84324f9f5dfa2d55ef6a87c89b73d SHA-256: 09f0b3a494934ef7096f983f4fafb4c81a4dde428c85aa98f3ef1b20c43c1c3e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by an ML classifier and contains multiple links to a redirector service. The primary redirector URL is https://ttraff.ru/pify?keyword=cancer+de+piel+epidemiologia+pdf, which is known to lead to malicious content. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users into clicking it for a supposed free PDF download.

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=cancer+de+piel+epidemiologia+pdf In PDF document text
    • http://files.norchestergardenclub.com/uploads/1/3/1/1/131164295/3940097.pdfIn PDF document text
    • http://files.loudlibertarian.com/uploads/1/3/0/8/130814754/liwejezidufofi-nerumez-tapuvewafeli.pdfIn PDF document text
    • http://files.michelleclarkvm.co.uk/uploads/1/3/2/3/132303269/kisebafopiwuke_pafumew.pdfIn PDF document text
    • http://files.scottfostercsu.com/uploads/1/3/0/7/130776712/36a5f3.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/1/0432/1935/3757/files/8077125287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/kosejupawagugitevezejenar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/bagifibafotisikibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9311/5548/files/elsco_roller_guides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8831/3506/files/59054807838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/30354649901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8326/8257/files/aquaponic_farming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/jofavojimefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9521/9623/files/74404147899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/51489514816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/kugazisadifamadevezigoduk.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_off00005dd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD6 5204 bytes
SHA-256: a276584416b30ecea2cefd8a8a7f0f7aa1c6dd98e8d1fb749f99f351ef2200e1
font_01_sfnt_off00006f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6F 11116 bytes
SHA-256: be75c188fb9a032e281a02d891275662dd9acfef01cd50cb36629928a81cd89d

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