Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c9f9d31519b762a…

MALICIOUS

PDF

52.1 KB Created: 2020-08-09 23:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f790d9ce10f5c183b583c97f29d516b SHA-1: 3882bafe486ec7babe66202317cf458cfe02cd92 SHA-256: 1c9f9d31519b762ad058f993395483e45163bcdc6ff24aca7231525f7522b9f3
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=legal+dictionary+english+to+telugu+pdf, which is the primary lure. This URL is designed to redirect users to potentially harmful content, likely for phishing or malware distribution.

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.cc/pify?keyword=legal+dictionary+english+to+telugu+pdf In PDF document text
    • http://files.gracebaptistchurch77.com/uploads/1/3/1/4/131453396/gibolapowogejet.pdfIn PDF document text
    • http://files.yowzersigns.co.uk/uploads/1/3/2/8/132815791/8621435.pdfIn PDF document text
    • http://files.eastsuburbanconnect.com/uploads/1/3/1/4/131438059/4040019.pdfIn PDF document text
    • http://guwivivu.spiritual-alignment.com/uploads/1/3/0/7/130775403/giroxamud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2375/1575/files/eugene_butkov_mathematical_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4369/1419/files/56622804236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4316/6107/files/zonepikumifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3462/8516/files/helix_season_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/3335699951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/38333551893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8741/3923/files/21954066471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/21292500674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1682/0635/files/exciting_feelings_imgur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/ant_build_xml.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7325/7116/files/dagusivuxufes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A2 5460 bytes
SHA-256: eea9311724c1a3488b87cebb1f94575116581703a4c269aa6cbad51e64368743
font_01_sfnt_off0000793d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793D 10328 bytes
SHA-256: cd3383487176ce43217f081c4fd38275e14f2fc172ffa18c5ab28a8c925b67af
font_02_sfnt_off00009628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9628 14668 bytes
SHA-256: 8e4e7d7e25b8182871edc0977e58458bfe2235b359bb03808303cb20c1574967

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