Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a3cd85fbbc3e6b1…

MALICIOUS

PDF

287.0 KB Created: 2020-08-04 19:34:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eda49d742b3578acea3a58b51186980c SHA-1: 662b7cf2aa22a077ac2b3762ca0b3c8b23b54bb2 SHA-256: 7a3cd85fbbc3e6b1330722a0c00103c91d7184be7e1213b6afb462ecc723fda6
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.ru'. This suggests a phishing or scam attempt disguised as a document download. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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=livre+algorithme+exercices+corrig%25C3%25A9s+pdf In PDF document text
    • http://files.northshoremandarin.com/uploads/1/3/1/3/131381046/pivilix-zegezo-gefebafidaz.pdfIn PDF document text
    • http://files.bmifitness.ca/uploads/1/3/0/7/130739239/bdacce39.pdfIn PDF document text
    • http://files.thefriendshipcentre.co.uk/uploads/1/3/1/3/131384300/07f24192d860.pdfIn PDF document text
    • http://files.robertomaldonado.com/uploads/1/3/1/1/131164176/6942357.pdfIn PDF document text
    • http://files.premiergoldendoodles.net/uploads/1/3/1/8/131871488/tonebejetux.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/1/0432/3111/7467/files/99980625103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/twitch_sub_count_emotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9347/3947/files/xikaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2127/9137/files/lutaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/4692/4451/files/bowflex_xtl_workout_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/paxazitifona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2127/7096/files/solving_compound_inequalities_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2090/9718/files/xaluzenifaxatinivifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/constructing_dilations_worksheet.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42169 5780 bytes
SHA-256: 9e742ca6c37969d52ec2920f613a4972f6bbfbec4e563860cf82e7a0e54e86cc
font_01_sfnt_off000434b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x434B9 18864 bytes
SHA-256: 362fa11d7bf3ed2bcb45c6839512eb4e4e4dc3809356425f1f03587a8a92f267

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