Malicious PDF — malware analysis report

Static analysis result for SHA-256 3758ea0c8b3edf01…

MALICIOUS

PDF

41.7 KB Created: 2020-08-20 22:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 917666c94d7809a537da9951437aff4d SHA-1: ad400b865256ce1faa200a38c76cc09346c5f8d6 SHA-256: 3758ea0c8b3edf012dc1847e2c4c3a0eb54f33570c3d4f1195dd5ed2a10fe0c7
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, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests the document is part of a link farm or SEO manipulation scheme, potentially designed to lead users to malicious content or phishing sites. No scripts were extracted, limiting the analysis of direct payload delivery.

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=slider+bootstrap+template+free In PDF document text
    • http://woketapud.mummydoctorlife.com/uploads/1/3/1/3/131398252/dopobonela.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/1/0437/2388/2645/files/ye_bhagwa_rang_song_ming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6383/5814/files/40715886514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32867625585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8972/9438/files/bise_lahore_9th_class_gazette_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7420/7387/files/83636785432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1555/9573/files/senezitelojanoxurexewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/railway_assistant_loco_pilot_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1204/6495/files/gufadalurorikugikat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7105/2707/files/pibine.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_off00006577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6577 5428 bytes
SHA-256: 799182ae7313b71c267683cc05a7a3bc66724967cb09ce882d3c809cb13a9174
font_01_sfnt_off000077c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C5 10460 bytes
SHA-256: 5927419534285571a61915c1eecb478cabbbfbcc13d7ae9297b855069fd76cba

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