Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6bca9b45ea091e…

MALICIOUS

PDF

32.3 KB Created: 2020-08-23 01:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d62484c9e244992675f4eacf09537fd SHA-1: 6f6006a16aff4865995bb4fad88578d4049a55fd SHA-256: 6d6bca9b45ea091e09e4d75c93adcc586728f5690b287c53fe69767b9f767d1e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to Shopify domains hosting other PDFs, but a critical heuristic identified a link to a known malicious redirector, 'ttraff.com'. This suggests the document is part of a link farm or SEO poisoning scheme designed to funnel victims to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=vejigantes+obra+pdf In PDF document text
    • http://files.studio10collective.com/uploads/1/3/2/8/132815054/2277147.pdfIn PDF document text
    • http://files.youthinequalityjustice.org/uploads/1/3/1/4/131407968/067e12a8.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/1/0434/3329/6028/files/complexity_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8079/4790/files/mukoworazaniwadip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3080/4637/files/64391189671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1684/5469/files/1974554829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2200/3872/files/4th_grade_math_vocabulary_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/black_sheep_cycling_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/48771997565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3600/6810/files/sekij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/8176504206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4668/0214/files/13307987219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/aleister_crowley_books.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 3

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_off00004347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4347 5356 bytes
SHA-256: 7f90f9fd960b5797e3699f0ccbcb26b0a095280678e8c1fd7a08896fc54cd736
font_01_sfnt_off00005591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5591 9564 bytes
SHA-256: b7d43b38af4d458f8cd70b8c1a26ff509c6641df124ea135b2d0aac407fec8fb

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