Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f64c2b15134eca8…

MALICIOUS

PDF

41.0 KB Created: 2020-09-08 17:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12e70f7f6b65174d44f72065f57d886e SHA-1: f2ec3db548c43596e244bab83ab441fb91bf621d SHA-256: 5f64c2b15134eca8e4a583c479bf2561895b72e7e0d87a01b916681d718f121b
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one to a known malicious redirector, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to 'free video apkpure' and a URL that appears to be part of a link farm designed to attract users. 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.club/wix?keyword=all+video+er+free++apkpure In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/440e29_f215d1b837cd486d9e3124973fae912e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7ef0dc_1918d3be379b4b2097d26ed7d7ed57cc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0c268c_f657e0c760be41cfb60c2f96e96b2a69.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0582e0_659cb5df3ffe4e56b3f1acf9490c0cd2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e33828_5b6eab5c5489433fa16899a5bd278720.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c75f60_d416de8f125b4c90826897051bf3bf0f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/21a131_1fd19f679ef249fab966026d671761e2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/418e76_952f68a7d64a45f1bf4dedfc9a6d2748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8022/0826/files/psp_iso_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9054/1733/files/68343192093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8209/4494/files/besharam_song_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7079/1573/files/jefikesamiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/tangisan_akinabalu_movie.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF0 4664 bytes
SHA-256: afbb1a586cf54dc74cb6bd239a8d797a10e3a9da1c26033f3531d7f223aa6fdb
font_01_sfnt_off00005bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD5 2252 bytes
SHA-256: 4af291ac6c378c6b2d793c4ead027a2e72d4d8c79d9226f528819b991ee21653
font_02_sfnt_off00006616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6616 10012 bytes
SHA-256: 1539f6e50699e091ae2e7a606115a266fa4195bad7c917dc06d2fd70b058b1d0
font_03_sfnt_off0000885d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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