Malicious PDF — malware analysis report

Static analysis result for SHA-256 41ec1c37b92a1d0a…

MALICIOUS

PDF

50.5 KB Created: 2020-09-18 05:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01fe3271d2d01423991d29a5c8a81a55 SHA-1: 931118da663b84b98a621b78c6d7abff9cfaea94 SHA-256: 41ec1c37b92a1d0a12ba5bfc9029a8fb4d4a04b676f52178f08475be4b4d81ac
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found by heuristics. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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.me/wix?keyword=uss+enterprise+owners+workshop+manual+pdf In PDF document text
    • http://nipegigu.trainingoutlaws.com/uploads/1/3/2/6/132681144/lozirok-bavumeraduveta-jomewodudokikup-gagetejafu.pdfIn PDF document text
    • http://files.thyperfectpomsky.com/uploads/1/3/1/8/131856498/ca3d2703b14b3a.pdfIn PDF document text
    • http://fesolu.nwgrind.com/uploads/1/3/0/7/130775219/dada51bfb0500e.pdfIn PDF document text
    • http://ravun.sciencewithheart.org/uploads/1/3/1/3/131380969/leledej.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/1/0437/9102/4277/files/mrsa_bacteremia_idsa_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3400/2086/files/gta_v_for_android_apk__data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/spanish_american_war_political_cartoons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1761/9621/files/pegeselimuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/vetutefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5778/8568/files/lyapunov_stability_theorem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/casual_vs_formal_dress_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/33661553479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7746/8311/files/30147651016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7030/0065/files/james_bay_scars.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2579/9067/files/vixibivokupoxaze.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2C 5428 bytes
SHA-256: 28083e0f9c44e6a7db3a897265bb455798191ad40923a4e281a6e28de7bde5d3
font_01_sfnt_off0000908c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908C 13748 bytes
SHA-256: ef7122426fb34438890cac5296de1ff47bbb4fa3a2aacf44f06ce4100c333a57

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