Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dea38c64f2cf255…

MALICIOUS

PDF

52.7 KB Created: 2020-07-31 13:18:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a15119373bcfcf104ed43d895ac39bd SHA-1: b0e1118c8b1ac63fce6cadf9e0c00daa3ccce2b7 SHA-256: 0dea38c64f2cf2550323af053efc9cf4246ee4e31125fc2db6544fe2c3db3bc6
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'word table of contents pdf bookmarks', indicating a potential phishing or SEO-based malicious link distribution scheme. The ML classifier strongly supports the malicious verdict.

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=word+table+of+contents+pdf+bookmarks In PDF document text
    • http://files.avohrecovery.org/uploads/1/3/1/0/131070872/890eb32962.pdfIn PDF document text
    • http://files.angelsgowns.com/uploads/1/3/1/4/131406935/zirikorudojakep.pdfIn PDF document text
    • http://files.fisheye.lt/uploads/1/3/2/7/132740277/boxesuse.pdfIn PDF document text
    • http://files.labellavitaitalia.com/uploads/1/3/0/7/130739783/bosazazawo.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/1/0430/8749/5322/files/54758152728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5449/6935/files/26810401114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1378/2173/files/tapetajaguxewuzujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/luruvosewinixul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/61019766546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/gokafabemadeguxamivuwaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/36243133955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/xuwibidugejufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8386/6018/files/vogozopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6620/3029/files/3180970439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/29614417215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9167/9639/files/30893869980.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000886c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886C 5260 bytes
SHA-256: caad664ec7f188c84a01ccaefffc6386ea5bea01231c194e9b972adfe4821dea
font_01_sfnt_off00009a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3E 13624 bytes
SHA-256: 6f4a064812aaa1ba3690afbd7c1b1a4e75ee1adec8d6953776052888dac9e6a0

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