Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7da4e05d45d655c…

MALICIOUS

PDF

43.6 KB Created: 2020-08-06 05:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0e1d0ddd85307d6732e4edfb84c8370 SHA-1: 7dd380d0bd9004c24875c77b401699231ecd8037 SHA-256: c7da4e05d45d655c4d9fd6f3cd86a7a033fc98b820fe0c62aed6a851da151b12
234 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting seemingly benign PDFs. However, one critical link directs to 'ttraff.ru', a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=libro+de+periodoncia+carranza+pdf+gratis In PDF document text
    • http://babekex.tommybarrettbroadcasting.com/uploads/1/3/1/4/131454012/2133414.pdfIn PDF document text
    • http://files.bigtrecreation.com/uploads/1/3/1/3/131379612/fasezojozixuf.pdfIn PDF document text
    • http://kevufaviv.joshualevinefoundation.org/uploads/1/3/1/4/131453060/madawisuvufi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5199/7592/files/gregory_isaacs_night_nurse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/rejivolibew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2110/5309/files/foxabovodipojaxus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4154/4602/files/27123129420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/19567800335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/rozujubijilugapukuwimaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/64003849787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7600/9622/files/36326299136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/7977376885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5033/4368/files/xekuvepowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/uplifting_primer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C03 5212 bytes
SHA-256: b619fcf3dd0efb68f374cc47124175672576d51b2c59c3a5e89f4cb207d4a7d9
font_01_sfnt_off00006dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC8 10988 bytes
SHA-256: 691cd4fa091ecc3934667604c9147a8a697d9a64a81b8654de1e462093dcd126
font_02_sfnt_off00009193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9193 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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