Malicious PDF — malware analysis report

Static analysis result for SHA-256 095351fec576c6ff…

MALICIOUS

PDF

44.2 KB Created: 2020-08-15 01:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cdaa4b9aef0ad93b623ae6287da377a SHA-1: 9c87830197c19a3ace072dff665f457710867f26 SHA-256: 095351fec576c6ffc02d97930b4a8acda2adbfbf587db5c9489a9970ed5f2857
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to SEO-optimized redirector domains. One such redirector, 'ttraff.ru', is flagged as malicious and appears to be part of a link farm designed to lure users with seemingly legitimate 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.ru/pify?keyword=vernier+caliper+questions+pdf In PDF document text
    • http://files.ornamentsofexpression.com/uploads/1/3/1/4/131455883/vojosa.pdfIn PDF document text
    • http://pixiru.flothecoffeevan.com/uploads/1/3/2/7/132712062/2dd2a8c435ec4d.pdfIn PDF document text
    • http://files.margoperin.com/uploads/1/3/2/6/132695354/segamesi.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/1/0437/9269/5458/files/jemorotonadenatonevugelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/23851177014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/94467237594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2119/5669/files/valid_email_address.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/ketogenic_diet_lyle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8151/3625/files/zotutodakufewojubon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8504/2598/files/types_of_projective_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/53881999147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/bible_numerology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/10752743061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/pawexunixarirekevatoj.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_off00006f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F39 5240 bytes
SHA-256: 4e1772d7192bf0b7958133e5eb500ca8aa23daae9bef5da751c378143698cc97
font_01_sfnt_off00008110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8110 10416 bytes
SHA-256: e75246dc00989bf156df5cb9f455148d1d428342a7d57f758df0e1c2f27c2fa0

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