Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c9e041ac44e59f…

MALICIOUS

PDF

54.0 KB Created: 2020-08-08 03:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3944ab7166bc780dfff931e440657b42 SHA-1: c3bc6e81ac9c5d8c282a6407baa23bcbbf16fc76 SHA-256: d0c9e041ac44e59ff0f5f532d955895dbdb1e41cc7bb0a6ba77215ab58b0aab6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=truth+table+logic+gates+pdf', which is a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves redirecting users to potentially harmful websites.

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=truth+table+logic+gates+pdf In PDF document text
    • http://gerititu.backwaterinc.com/uploads/1/3/1/3/131379732/gakifepadololojefo.pdfIn PDF document text
    • http://files.firstaidmissionsofhope.com/uploads/1/3/1/8/131871633/823741c7740.pdfIn PDF document text
    • http://files.juliakiryanova.com/uploads/1/3/1/1/131163620/belidosokulatuko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0250/1016/files/balistica_interna_externa_y_de_efectos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9352/3618/files/catholic_wedding_mass_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/93788337775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8596/3169/files/nadanoxokesekut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1362/7294/files/kebowotosewadasuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/say_you_say_me_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/30310475027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/mekufelijunagazopepiteno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/atal_bihari_vajpayee_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/82690914347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8033/3989/files/toxiji.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 2

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_off000087e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E4 5280 bytes
SHA-256: 30e8541541b9508cfd8b130a643a15681b5b91fbaec55aaaf33ea9f61dfeef5f
font_01_sfnt_off000099e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E7 10308 bytes
SHA-256: ac9e65eec806d43fc91d526d67ad383ad846f447ce5ed417bb9b4c0f8d3a885b
font_02_sfnt_off0000bcf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF5 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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