Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af204f61febd728…

MALICIOUS

PDF

42.4 KB Created: 2020-09-10 00:00:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c465e3438e8a9838195b61060478bda SHA-1: 6054f59d9bc18bb7f413b898494f66a6fc99b927 SHA-256: 0af204f61febd728b178e6b27c2cc978de45d98e79b976e59a8f5e75b249581d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Havaianas sizing guide uk' and the malicious URL, suggesting a lure for phishing or malware delivery. 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.me/wix?keyword=havaianas+sizing+guide+uk In PDF document text
    • http://files.rockthecradlemusic.com/uploads/1/3/0/7/130739116/3288130.pdfIn PDF document text
    • http://files.krabi.fi/uploads/1/3/1/8/131856949/ef3be8bd7c3f.pdfIn PDF document text
    • http://sunizawot.royalvacationtravel.com/uploads/1/3/1/6/131637814/xibevosu.pdfIn PDF document text
    • http://files.autismeducatorsact.org/uploads/1/3/2/6/132681783/b629bf27200553e.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/289c5e_e43a6c1b5ce647ccb29e9ffd0676d12f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5b604d_8d17795859744ad2bf2c521c17c4c8fb.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/544e7e_ef776ed72e2249f7a863fe6697d8e397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8992/files/center_parcs_elveden_forest_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/46209801755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/buku_agama_islam_kelas_11_semester_2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ea691_ead5c396bdf249ab88689d86e059a9e5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/338562_7d45bf85f7f144c5897052e8985b12cd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/834936_072c90f1e4b94e34ab48f72a76dd4fa5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e3c460_43e28661806c4b00baa0a5d01a096f90.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 6

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_off000062cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CD 5000 bytes
SHA-256: 969ba3b9c93c216cdf653a94b7f845966d09d93291d3eef52efe1e51c6345ec1
font_01_sfnt_off000073f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F4 12996 bytes
SHA-256: d911cdba576e79e577ac368b8bd26ebd184f6d40e50ac56f4146b5dfdb68362e

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