Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b8a2521d9864f8…

MALICIOUS

PDF

41.8 KB Created: 2020-09-11 10:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7d49aeda6f6dfd57551902c12baee28 SHA-1: dbf8b4f2aafa2104e37e6bfddc7128602dca7661 SHA-256: 56b8a2521d9864f8e7233d9739dfa972a84cca86c245f890b18ed9406528e799
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to improve search engine rankings. One prominent URL, 'https://ttraff.me/wix?keyword=best+browser+fps+games+no', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a social engineering lure to drive traffic to malicious infrastructure. 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.me/wix?keyword=best+browser+fps+games+no In PDF document text
    • http://dedilejo.stpaullevittown.org/uploads/1/3/2/3/132303354/juxekajebase_xejek_fimogijezum.pdfIn PDF document text
    • http://files.deesty.fr/uploads/1/3/2/6/132683142/sokezozujawumum.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/5fd5c1_8532b34f86d64dd381a63d5aedabbafc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ca300b_475fff88d457466cb4079de84d573259.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d875483a2744488dac7ae11cefa3fc74.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2c7c49_36f763bff9b241cc8b564dd84d8a99d0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/575363_d956696a72a94deabb22ac07d315fa0a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2974/9147/files/beers_criteria_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/vijajorerogixidipaxib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/76113916606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7328/8869/files/pumivabinasadodugowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7378/8321/files/new_headway_beginner_3rd_edition_teacher_s_book.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e1d58f_64e662461bf44db98d6b90d4cddb5ca5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/34e21e_66b4bb0e11184bf083c3ce206c782bc3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fb5067_d219fa5b949f41a08a4810d02719d865.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 7

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_off00006530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6530 5468 bytes
SHA-256: 54aa164311e8a69bbd17c014a04b94c0c4ec63a983ed995ee62ea9d5fc29c527
font_01_sfnt_off000077ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CE 10120 bytes
SHA-256: 37b3681faaf6efdd220aa90615bd5f5279a2515c4d191820fd4fdf9680cb5b94

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