Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c3e3020933695f9…

MALICIOUS

PDF

81.7 KB Created: 2020-08-22 06:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7e5b0511fb06060102b3715ce31c944 SHA-1: 715b1b43f8d22a2f40725fc967b3f6f9b1a832b8 SHA-256: 5c3e3020933695f9c76ee53d1275305eaf70e53e585d5b459594c301c6a807a8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service that ultimately leads to a malicious URL. The document body, though heavily obfuscated, contains text related to a game mod and the malicious URL, suggesting a lure for malicious content. The ML classifier also strongly indicated maliciousness.

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=resident+evil+5+albert+wesker+mod In PDF document text
    • http://files.ctefaculty.com/uploads/1/3/2/6/132695839/2265389.pdfIn PDF document text
    • http://files.splms.org/uploads/1/3/1/4/131482968/7986328.pdfIn PDF document text
    • http://sugovip.cyclingcapecod.com/uploads/1/3/0/7/130739591/8684944.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/1/0429/2509/7126/files/9996781304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/jay_z_lost_one.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9594/8454/files/metal_cutting_machine_tools_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/72357742298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/php_explode_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6375/4404/files/tofevelekugusufekexuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/ariana_grande_popular_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1322/6143/files/88739163642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/1434400180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/48724606955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/74929500913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3815/0549/files/censorship_in_media.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_off0000f171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF171 4184 bytes
SHA-256: f9fe86b26ca6a13d8129293aa5b141e7f1d6a9a2b45689b879ab9bae540d9e84
font_01_sfnt_off0000ffff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFF 5456 bytes
SHA-256: ad210e321fbef5b2bfcc66384a5f7450c423b09cf41ef25c1397b2fb430fee6f
font_02_sfnt_off00011290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11290 11692 bytes
SHA-256: a40abf27d89946a6850e160ab10786a2de9004219370b0fb7a5c0d460f64001e

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