Malicious PDF — malware analysis report

Static analysis result for SHA-256 07406170839225c0…

MALICIOUS

PDF

57.1 KB Created: 2020-07-30 17:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab2ee45a5e5990be8e91728f807da381 SHA-1: 83f6edecc95bb216d152c088dda3f10b6ddedbc4 SHA-256: 07406170839225c048148f6b77d77382ae679a612ec0a365de58695c73dd099a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains text related to 'brabu result 2020 pdf download', suggesting a lure for fake document downloads. The ML classifier strongly indicates maliciousness, and the presence of redirector links points to an attempt to distribute further malicious content or phish for credentials.

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=brabu+result+2020+pdf+download In PDF document text
    • http://files.marcellusroyaltyaction.com/uploads/1/3/1/1/131163684/julitoru_mitumudej_xusize_juwujegixuvoseg.pdfIn PDF document text
    • http://files.aprilsandersphd.com/uploads/1/3/1/3/131383657/zopuwom.pdfIn PDF document text
    • http://files.njpacci.org/uploads/1/3/1/1/131163898/vinenas.pdfIn PDF document text
    • http://files.annadangerfield.com/uploads/1/3/0/8/130814666/612de2fb44ae9f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3125/7510/files/66084847637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/tezetalujerifewafufana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6987/4082/files/92631589513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0734/files/33804122169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2665/files/melafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/29456704338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/85107796428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/jutuwamexutewamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/gimapevuxefikomofefuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/20784737907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2558/7609/files/42097693230.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8070 5424 bytes
SHA-256: 3af682ea0ae801f7f8d51d1d285cf4334ce76c67d03d9a2f2032ac7b495147b3
font_01_sfnt_off000092fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92FB 10476 bytes
SHA-256: c10f7cf00695cea708bedc689b97db94392374942c5d271a3bc2c09add4d0c4c
font_02_sfnt_off0000b70a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB70A 10104 bytes
SHA-256: e0eef67318eb21b27badf8614933f466e8b2bb18f7b308f32609acf6fe0972d4

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