Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ea6f7ef2391065…

MALICIOUS

PDF

42.8 KB Created: 2020-08-12 07:37:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6051b414210b4b4692c05615f17e7730 SHA-1: 39a7e3d6999ce8b595ef2b9deadbf955fcf46b2f SHA-256: f6ea6f7ef23910651d8d6a0838c9651d3ac649c3379895b6864afcef4ade0a92
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. One of these links, 'https://ttraff.ru/wb?keyword=remember%20your%20roots%20#4%20worksheet', is flagged as a malicious redirector. The presence of numerous links, including one pointing to known malicious infrastructure, strongly suggests an attempt to lure users to malicious sites. No scripts were extracted, and the document body is heavily obfuscated.

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/wb?keyword=remember%20your%20roots%20#4%20worksheet In PDF document text
    • http://panudatot.joekimgroup.com/uploads/1/3/0/7/130739723/a2b80bdb3.pdfIn PDF document text
    • http://files.docmazo.com/uploads/1/3/0/9/130969950/1af5c471f644.pdfIn PDF document text
    • http://files.nxtgenerationenergy.com/uploads/1/3/2/7/132740415/sodegebu.pdfIn PDF document text
    • http://zadidasoz.shoptheothersidegifts.com/uploads/1/3/1/6/131606490/nakipubiko_guxofafaxejat_zobefew.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/1/0435/8438/9275/files/tidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/dogoropovavovuxuvavotig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4500/3169/files/78332214966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/74922901442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1362/5240/files/31952031167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/siwovarudedijufimanomaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66691602327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4076/7132/files/astm_a36_14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6945/7063/files/76008263086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/25073597844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/forobomofesabofinelusita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/cricket_score_sheet_pdf_blank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2707/0119/files/gowenirirogopano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/tezufagibed.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_off00006b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9A 4836 bytes
SHA-256: 372c3083faeb1ccee081a80751e56b283e148e8493a7c833176c3b45eab5bc97
font_01_sfnt_off00007bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFD 10076 bytes
SHA-256: 6248709e85a27b6009c48b5f6dbaac69c2074faacb5311c0beeb443b8f8e625c

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