Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a726add4893235…

MALICIOUS

PDF

54.3 KB Created: 2020-08-19 22:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a05707b15d0081bb3b7e685622f0fb7 SHA-1: 51f672b3ae5367371a410016e0303e410099ed2c SHA-256: 24a726add4893235d5df98bd17702923f339fda2655f3b2321a5c4809e791de3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.ru. This suggests a link farm or SEO poisoning tactic designed to drive traffic 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.ru/pify?keyword=guardians+of+the+galaxy+2+soundtrack In PDF document text
    • http://files.mathessentials1.net/uploads/1/3/1/8/131860787/mozodamakemi.pdfIn PDF document text
    • http://files.dariodidonato.com/uploads/1/3/2/8/132814146/7bee8500.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/1/0431/0679/5686/files/63847191974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/74417710393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4582/6210/files/domabulujufevutesuwazunap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2122/1539/files/baka_to_test_light_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3514/0007/files/ruvogetisidigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/isometric_view_drawing_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4845/9675/files/fumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9506/8567/files/portland_cement_production.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5473/4241/files/introduction_to_mineralogy_nesse_free_download.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 2

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_off000086cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CF 5564 bytes
SHA-256: bcba5b4fb1e6886b5cda9746103584c84acf32acb571c84ce387f0cb79365df8
font_01_sfnt_off000099cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99CD 10584 bytes
SHA-256: d74231301ff48f3c67cb9566de0ac6223f7cf264834f9053142350891e7e18e6
font_02_sfnt_off0000be00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE00 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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