Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d32f49ccfb8d7b…

MALICIOUS

PDF

50.5 KB Created: 2020-08-07 16:14:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f7fbefd4dc79afb5f5935284a88ffc88 SHA-1: fde4a49a7110c95909ab7ee9e9a01e6f83fd3ad0 SHA-256: 09d32f49ccfb8d7be7de50061cb4496b85cc094f93c94b4205dcda7aaac44640
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary redirector URL is https://ttraff.ru/pify?keyword=thyristor+circuits+pdf, which is likely used to funnel victims to a malicious payload or phishing page. The ML classifier strongly indicated maliciousness, supporting the heuristic findings.

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=thyristor+circuits+pdf In PDF document text
    • http://files.ayumialdina.com/uploads/1/3/1/4/131406140/5218818.pdfIn PDF document text
    • http://files.tacomateasandherbs.com/uploads/1/3/0/7/130740257/2977954.pdfIn PDF document text
    • http://pedove.aspiraconsultancy.com/uploads/1/3/0/7/130739415/36b8e043e.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/1/0429/4567/5420/files/2719968271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/brasserie_star_madagascar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/52836358973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/40223489445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/11257236299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/79597013926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/lunebigisatokuwubimazize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/rovizexumafokojagus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/84574603145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3215656586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9927/4916/files/20418404966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/admin_officer_interview_questions_and_answers.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_off000088ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CE 5052 bytes
SHA-256: a7e868abc1bf29c9d3b8e93e6e57900ad586a46d0d2a2e20299283f6a3bf14bc
font_01_sfnt_off00009a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A06 10240 bytes
SHA-256: e23a42d523938dcbe4263abb4b1d0dcc44a76782db4bad3c41fcf7140861fb66

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