Malicious PDF — malware analysis report

Static analysis result for SHA-256 e475252126334756…

MALICIOUS

PDF

41.9 KB Created: 2020-09-15 07:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 026b8cd9fb940a744e9a984d3d08f233 SHA-1: 36147278f525d1f5b42209037eadd9923ce28e01 SHA-256: e4752521263347562295fda549908e89bd28de540ea0d04fc31e855a486c700b
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text fragments that appear to be lures for free games, aligning with the malicious redirector's keyword. The PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics confirm the malicious nature of the embedded links and the document's structure as a link farm.

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.club/pify?keyword=last+stand+union+city+hacked+free+games In PDF document text
    • http://puwipo.smilliestudio.com/uploads/1/3/0/8/130814328/sepafozulono-kadogawe-pefogozasigaroz.pdfIn PDF document text
    • http://files.thecovenantschristandyou.com/uploads/1/3/1/3/131379434/94345039.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/2b25b5_d375a9115d6e4f1699319914c71bb828.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_71eaf389f3d94dfd8354dcb8484d49b1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1c90dc_8a1e2d8535f6475a96404790faa315b4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3886/7607/files/subiwibudepezijuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/55759214007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/56355286935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8139/1514/files/reformas_borbonicas_sociales_de_la_nueva_espaa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/vapekimulazopirexoji.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a32c20_ea18a00688fd4f2d9723359fcec0a915.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/96768c_9b02f341666d47cc8b8d06027386fa3c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cbe325_6026b123fb1c4adab6ff252d1d525e10.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000506a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x506A 5508 bytes
SHA-256: 26b2477607289d2a22d9a7e59eaaa182ee3075b68cb6eb7e2f88cbdadf9af6b6
font_01_sfnt_off00006310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6310 10128 bytes
SHA-256: 799ea5ac56579db73af7279d06fcaa3ecbabec387b64ef61b1cad9e76d17e63f
font_02_sfnt_off000085be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BE 16076 bytes
SHA-256: 77d0e41b193f2956426f125f137c5665e22c2099967b8d3a504bff5b234847bc

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