Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ab917561227905d…

MALICIOUS

PDF

44.0 KB Created: 2020-07-28 05:17:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 084466bd63d5f01285e4e5c460948fca SHA-1: ab5a20bcc8f82162e155953ea01d14e9e34f195a SHA-256: 5ab917561227905d71940668f348d66690b57c02ec9979be3c732f949382762b
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate resources, but they redirect to a malicious domain (ttraff.ru) known for distributing malware or conducting phishing. The heuristic firings indicate this is a link farm designed for SEO manipulation to lure victims. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious content.

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=reciprocal+functions+worksheet+pdf In PDF document text
    • http://files.journey-to-alaska-adventures.com/uploads/1/3/1/4/131453522/gebuzuruzav-nuzile-wumizabovoboja.pdfIn PDF document text
    • http://files.poweryogaflow.com/uploads/1/3/0/7/130776338/7399846.pdfIn PDF document text
    • http://files.macaelstone.com/uploads/1/3/0/7/130775092/2753714.pdfIn PDF document text
    • http://files.torahdec.org/uploads/1/3/0/7/130739542/gejizimezen_nipula_panad_xatiludixe.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/1/0431/5486/6333/files/taxefogafag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5504/6037/files/58039250047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/48755911159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/basopefaratotimilev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/26992673480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/muzopigalejixelaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6487/7471/files/nazonaripog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/69684295077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/28471220709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/wowagelupodixizaxosama.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 4

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_off00006ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBC 5288 bytes
SHA-256: 0919106b98a6a1db1728125306799ec78b047eea2fc484f000e4b25f4dd60a00
font_01_sfnt_off000080b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B7 10076 bytes
SHA-256: dff2581477323b35d6e1076180ec32b467d2bbbe284ed5c37fbef112e1bddd35

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