Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa6f9fce2bef2e0…

MALICIOUS

PDF

43.0 KB Created: 2020-08-17 17:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20d38c20e95da81fb1e531e957c4c5b7 SHA-1: e1730132536f14d788526c17c04b184b066dede3 SHA-256: 1fa6f9fce2bef2e0cdda54f25018f9fcefa423ba4c9d4775f00d11928ae1478d
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised with a seemingly innocuous keyword. The ML classifier strongly indicates maliciousness. The document body, though partially corrupted, contains the same URL and a reference to a PDF file hosted on Shopify, suggesting a link farm or redirection tactic. No scripts were extracted, limiting the analysis of the execution chain.

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=refrigerated+breast+milk+storage+guidelines In PDF document text
    • http://files.dkgmd.org/uploads/1/3/1/4/131438443/5917786.pdfIn PDF document text
    • http://files.pleasurepie.org/uploads/1/3/0/7/130776508/rijimo.pdfIn PDF document text
    • http://files.reading2reading.com/uploads/1/3/0/9/130969555/49253ecafb.pdfIn PDF document text
    • http://files.archieparnell4congress.com/uploads/1/3/0/7/130775379/vomibazoti.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/1/0428/6388/6495/files/vinapusevorujijizowedemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/bilanz_beispiel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/45473492735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8130/2167/files/ramix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1697/3476/files/62218610838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/b_r_bhat_modern_probability_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/87217446328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7186/4993/files/57003577382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9848/6424/files/57650587021.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_off00006896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6896 5440 bytes
SHA-256: d3d5404705d87c1021576f289ac4dea428b33c47878d6be9f668604bad7c7dc2
font_01_sfnt_off00007b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B06 10564 bytes
SHA-256: 9b78149065fadcd1fb743b507aa48b8e36f599c456187c9c435cf6d58baa7cca

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