Malicious PDF — malware analysis report

Static analysis result for SHA-256 56a95fd5776bec8f…

MALICIOUS

PDF

42.5 KB Created: 2020-08-17 14:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe0a4a358b3270b91f04bafa20fbe053 SHA-1: 94621221588d025eea2f50146d4bf14d7af99939 SHA-256: 56a95fd5776bec8fc74370b5ed20c75bb3396c7ea33ad89302f26d3417b3ff3c
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to a 'mosfet irfz44n datasheet'. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted from this sample.

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=mosfet+irfz44n+datasheet In PDF document text
    • http://files.integrativefitnessnursing.com/uploads/1/3/1/4/131482976/cdd82.pdfIn PDF document text
    • http://files.projectxlacrosse.com/uploads/1/3/1/3/131380342/wiwukikazevip_malova_jejomubola.pdfIn PDF document text
    • http://juwip.poppyplume.com/uploads/1/3/2/6/132695569/cb7dbcd7ab05.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/1/0428/1673/3340/files/sozurejewajolobelikojovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/adjointe_administrative_formation_samuel_de_champlain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/cessna_182rg_poh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/37849635048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9876/5480/files/talipotokirabikagofosavip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6269/files/gokugumav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/moose_jaw_fall_recreation_guide_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2011/4344/files/theory_of_c_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/22543793397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4227/4454/files/miriwumenoxomukon.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 6

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_off0000597c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597C 4896 bytes
SHA-256: ab5d2b0ac95afb8de40ca37e5dca82c7f9cd57b59034f6135f605362e64be99d
font_01_sfnt_off00006a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A25 10968 bytes
SHA-256: 8581b84fe535bda940cc9c28d4dbf9d72bfbe5595487cd4704532cf5b235508f
font_02_sfnt_off00008f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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