Malicious PDF — malware analysis report

Static analysis result for SHA-256 a76d466c02cbe4f3…

MALICIOUS

PDF

48.8 KB Created: 2020-08-22 12:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6bd781c88a0072e5452e1af914094d33 SHA-1: 97fee77c884b19772431515f2e6dbe0e77799c6f SHA-256: a76d466c02cbe4f3951099437fdd3d006eb4e0a677cc626882935628aab316d2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to domains associated with redirectors or link farms. The document body, though heavily obfuscated, contains text fragments suggesting lures related to game guides and job appointments. The primary malicious URL identified is ttraff.ru, which is flagged as a malicious redirector. The presence of numerous links, including those to potentially compromised Shopify domains and other suspicious hosts, indicates a campaign to drive traffic to malicious infrastructure.

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=osrs+construction+guide+1-+50 In PDF document text
    • http://bomuleb.bossertdredge.com/uploads/1/3/0/7/130775934/d533e25cc23.pdfIn PDF document text
    • http://pepetesan.principalwest.com/uploads/1/3/1/8/131856554/04166a29754.pdfIn PDF document text
    • http://files.ionamccuaig.co.uk/uploads/1/3/1/3/131379134/0f8fa.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/1/0444/3560/3623/files/jupuzositunijopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/buxebadosuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5766/files/51259026463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8502/8775/files/36766488943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2773/2379/files/kata_bassai_sho.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3237/9545/files/jelina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/job_appointment_letter_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/best_small_size_android_smartphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/41643554566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/30380361795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8377/4614/files/xebagesokirubagimuwur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/85241710925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/xodaxukit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6314/6656/files/88736967785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4442/9984/files/bemenunonorujegirufule.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_off00007bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB6 5240 bytes
SHA-256: 3f9b69788a6ab55a410ac08ef18555ca4ff8c45273f3972010eb8b3756eb5efc
font_01_sfnt_off00008da4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA4 12892 bytes
SHA-256: bfd7d3ca4b91970557cb56ff7d1dc66d3cd167a0d8960d3fd2a848c7c9dd7041