Malicious PDF — malware analysis report

Static analysis result for SHA-256 25964ed9b76fb987…

MALICIOUS

PDF

45.7 KB Created: 2020-08-19 00:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 631ace6cc001c7af3b9b9951ded1012b SHA-1: 0800116502e51bd1e5d63b8ef8f6983d8d042152 SHA-256: 25964ed9b76fb9873a19a341533c6c19263f459055472821d473dfd27d0413a3
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=actual+evapotranspiration+pdf', which is flagged as malicious. The presence of a link farm suggests an attempt to generate traffic or distribute content through SEO manipulation, ultimately leading to the malicious redirector.

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=actual+evapotranspiration+pdf In PDF document text
    • http://files.chardoncommunityactionteam.org/uploads/1/3/1/3/131384018/pugotut-newifuniz.pdfIn PDF document text
    • http://files.ladyteeth.com/uploads/1/3/1/4/131406811/labewexudejosiwuki.pdfIn PDF document text
    • http://zavamos.brain2gain.com/uploads/1/3/1/3/131383483/9639575.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/1/0438/7930/1275/files/zufifojuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/introduction_to_environmental_engineering_mackenzie_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/29503038262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/sulphuric_acid_98_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5890/8584/files/wheel_bolt_pattern_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/78654233660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/38154798159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/besokakogerifaxesiveni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/boziku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/english_grammar_practice_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3077/3913/files/62201864727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4968/4885/files/aashiqui_2_full_movie_hd_filmywap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5491/3950/files/fakodulepetebepodirutes.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_off000074f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F0 5196 bytes
SHA-256: 601c0f8ccaa929334b614864b822f29803ffde91ca95f1ebdd222e8046446cee
font_01_sfnt_off000086ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AB 10240 bytes
SHA-256: e81e369c2399bc242bbcb29c9a47440fb2ae325646f055d096254f1d311437b2

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