Malicious PDF — malware analysis report

Static analysis result for SHA-256 b749f3f91e692c0f…

MALICIOUS

PDF

46.6 KB Created: 2020-08-06 03:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f0b6d79f8d25cf4a28af2b4c30f6e48 SHA-1: ec80900b420849fba35ca6323962703c458d1f14 SHA-256: b749f3f91e692c0fbf339d099f7497b0eab2555cc72026462b5e8724c0251516
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with numerous links pointing to Shopify-hosted PDFs. The embedded URL in the document body also leads to the 'ttraff.ru' domain. These indicators suggest the primary purpose is to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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=canon+in+d+piano+easy+pdf In PDF document text
    • http://files.deanacio.us/uploads/1/3/2/6/132695832/8052355.pdfIn PDF document text
    • http://files.shoulderandhandclinicisleofwight.com/uploads/1/3/1/3/131384024/8741995.pdfIn PDF document text
    • http://files.theexoticanimalencounter.co.uk/uploads/1/3/0/7/130775759/9875250.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/1/0433/4541/2261/files/wegokafamuzunogajaxot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/lukabesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/vutikude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2067/1386/files/37675718045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/6246210310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/27165007849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5377/files/lalikilazafujaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/59417712916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/lakimatefekifutatavurej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/53572842467.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 7

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_off00007856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7856 4912 bytes
SHA-256: 7d21664b3f0e66ca8ca0b1a486d97c24aa371fed033371d010b9785243d3f376
font_01_sfnt_off0000892d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892D 10724 bytes
SHA-256: 66ce4bb56bc48cbfdd979f20c7a2b86ad0c772f969c21524a3682a5853d60d7a

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