Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e7a2c0f34e3805…

MALICIOUS

PDF

41.9 KB Created: 2020-08-08 21:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29cb1005c430332d5f8f4b56789606f6 SHA-1: 128e31b460c8f8cf7582b853767d4cea0bb53c29 SHA-256: 57e7a2c0f34e3805272351e02f5f248bc018378eb7adb975d61401bb5f5695f5
194 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 external PDF files hosted on Shopify. One of the primary links, 'https://ttraff.ru/wb?keyword=construction%20of%20three%20phase%20transformer%20pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure through a link farm strategy, likely for phishing or malware distribution.

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=construction%20of%20three%20phase%20transformer%20pdf In PDF document text
    • http://files.nutritioncapecod.com/uploads/1/3/0/8/130874085/madezega.pdfIn PDF document text
    • http://files.circlewelder.com/uploads/1/3/1/8/131871466/gafeginarelem-nimadefaboku.pdfIn PDF document text
    • http://files.gramophonestl.com/uploads/1/3/1/3/131381602/nabixa.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/1/0435/8481/5259/files/lewobafugewivev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/raxuledodividudimuneri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/dakufiwowalopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7862/2111/files/elementos_de_un_accidente_de_trabajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7837/6853/files/4276559998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4609/9349/files/44237058484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/siwuguxozuxivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/32847903543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/chemical_formula_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8572/5850/files/37557874654.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_off00006048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6048 5268 bytes
SHA-256: 0c86f98d53a0655d3ef57dffeaa8ce7261c0f000ee25f4b66be670ba102e25e4
font_01_sfnt_off00007205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7205 12800 bytes
SHA-256: a4e3119183a88d8570d5021ec0819af3e38d9a677faee3ad443393e85f626eb7

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