Malicious PDF — malware analysis report

Static analysis result for SHA-256 25a6df2e58d5f813…

MALICIOUS

PDF

45.7 KB Created: 2020-08-07 04:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9dd41c395413f05e34ee2584a3b05381 SHA-1: 7a44485810022cdcba844bacfaaeac452370bbae SHA-256: 25a6df2e58d5f813713fd3ff4caa6d26d7795328ee1a6ed00580e52586870d35
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical redirector link to traff.com, suggesting a phishing or malicious redirection attempt. The document body, though heavily obfuscated, contains text related to 'Glutton berserker light novel pdf', indicating a lure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious redirector URL is a high-priority indicator.

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.com/pify?keyword=glutton+berserker+light+novel+pdf In PDF document text
    • http://files.swwsupplies.com/uploads/1/3/2/6/132681749/839728.pdfIn PDF document text
    • http://files.birminghammodelyachtclub.com/uploads/1/3/0/8/130874403/29ef08b3.pdfIn PDF document text
    • http://sikof.yellowstonewritingproject.com/uploads/1/3/1/3/131381078/naduxo.pdfIn PDF document text
    • http://files.adamlilley.com/uploads/1/3/1/4/131406604/feredubikopuwe_mukekabe.pdfIn PDF document text
    • http://files.communekitchen.com/uploads/1/3/2/6/132682790/bugilawip.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/1/0434/0360/8216/files/86585908247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3067/3565/files/sigozapoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4166/8770/files/wezobiwigusekikeparewol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8766/7103/files/sugagojitezabarazul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0568/1562/files/76079690299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/20077272541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6139/3046/files/jagemimif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/58135692859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/39311046616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6334/5301/files/sexinemeluxavepetenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72966212333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/44749761195.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 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_off00004d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D36 11832 bytes
SHA-256: 36787f67f62d65912ab5be272b43c4bb0d05af700c3d09715ce0990f88b1d78e
font_01_sfnt_off00007467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7467 5388 bytes
SHA-256: 7a64d804c147a119059e8efdd333bdbdb1c187bb22ffc443fa6edc9c3f7b3a9d
font_02_sfnt_off000086bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BB 9616 bytes
SHA-256: cd35132ae078c620525581cf9a141682b95dfa045f4600dcefe49db68434e4f8

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