Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef93c2fc11dc319…

MALICIOUS

PDF

39.9 KB Created: 2020-08-17 07:22:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a0668de4feb67743a6f3b9a0fde0d1c SHA-1: 2db0ef70868c6284eb80573e1853e1e2490dc294 SHA-256: eef93c2fc11dc319a291e87b5c8b9cf352c565e4ae68497ffbf86524342619eb
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a "custody papers template" which redirects to a malicious URL (https://ttraff.cc/pify?keyword=custody+papers+template). The document also features a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=custody+papers+template In PDF document text
    • http://files.windsweptgoods.com/uploads/1/3/1/4/131437513/8b92ffb2.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/1/0433/3371/4070/files/car_racing_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4066/0891/files/78367539977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/automatic_plant_irrigation_system_using_arduino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/zekuxox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4309/4677/files/39009304192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7174/files/57437999799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/bilateral_independent_periodic_lateralized_epileptiform_discharges.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/moodle_iit_delhi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/butiwakisopipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/74470327370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/fotedilepuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8806/7225/files/munimorerosovukerobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/ridulugasukoxupegupen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/xujaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/how_revolutionary_were_the_bourgeois_revolutions.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_off000060fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FB 5112 bytes
SHA-256: 4dd0aea74855975b9e2cf3b6d2ddd3d9a30955226b7d8587853ae63e6b4e3331
font_01_sfnt_off0000724a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724A 9672 bytes
SHA-256: 5d1118f89a876811104b0953878d78f38579ab8d4ecaf7df16d79a02e56c8a58

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