Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d45bdd42037ab2…

MALICIOUS

PDF

44.1 KB Created: 2020-08-14 05:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1b4d256b17c39937caa1cca7ed3fe90 SHA-1: 710fb61432bc94483057b346d8abadf7d6ad752e SHA-256: 88d45bdd42037ab22e745d70c60b9cf865f6266583db00abdfb983d063b3d1f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, many of which point to a redirector service known for malicious activity. The primary redirector URL, 'https://ttraff.cc/pify?keyword=battletoads+double+dragon+nes', is explicitly flagged as malicious. The document appears to be part of an SEO link farm designed to lure users with seemingly legitimate download links that ultimately lead to malicious content. The ML classifier also strongly indicated maliciousness.

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=battletoads+double+dragon+nes In PDF document text
    • http://files.4burlingtonwoods.com/uploads/1/3/0/7/130775866/duwizifenej.pdfIn PDF document text
    • http://files.larkseverest.com/uploads/1/3/1/6/131606629/ef78be58dcc6d6.pdfIn PDF document text
    • http://fesare.learningandbehavior.org/uploads/1/3/0/8/130873877/fevofukejege-benaxedowamo-ludekawufiki.pdfIn PDF document text
    • http://files.dj-dogtraining.co.uk/uploads/1/3/2/6/132681438/2956953.pdfIn PDF document text
    • http://texujikux.projectmaleprogram.net/uploads/1/3/1/0/131070420/vopasamonizuviki.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/1/0434/5495/5672/files/zetetic_astronomy_1881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/voleluxiregeluwodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/7th_grade_math_equations_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6172/1765/files/67498783288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/xusetimunufojubadutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9736/6436/files/agama_di_malaysia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/legevotovetowojaxegopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/wezes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9966/9151/files/moving_average_method_forecasting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/43902745387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4420/files/27099184764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/beckman_coulter_access_2_brochure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7330/5750/files/rowikebaxam.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D76 5180 bytes
SHA-256: 5d92142e985fad9ec11f8b31bf31dc8b7bd668248e27d4f6578100820e79a0a5
font_01_sfnt_off00007f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1A 10680 bytes
SHA-256: d29180d5ed94604e066959d87805ca37534bc2aedf31203088fb6b3060d2d925