Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e546855b8ba890…

MALICIOUS

PDF

68.8 KB Created: 2020-08-07 07:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0425630090d9623db9ed1cc704d03049 SHA-1: 83f0cba82f698a894fcfe94a022a2e2c94a0e0d5 SHA-256: f8e546855b8ba890aefb85887ed72193a018598daa574b81e01d3951a6728e8a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=ap%25C3%25B3stolos+augustus+nicodemus+pdf'. This URL is likely used to redirect users to a malicious site or download further malware. The document also contains a PDF link farm heuristic, indicating an attempt to manipulate search engine results or distribute multiple malicious links. The ML classifier strongly supports the malicious nature of this PDF.

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=ap%25C3%25B3stolos+augustus+nicodemus+pdf In PDF document text
    • http://jojur.chicago2025.com/uploads/1/3/0/7/130775934/6970568.pdfIn PDF document text
    • http://files.maynemath.com/uploads/1/3/2/7/132740186/8a2bedbe44.pdfIn PDF document text
    • http://files.pusatbazaar.com/uploads/1/3/0/7/130738569/7775537.pdfIn 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://cdn.shopify.com/s/files/1/0431/7921/2959/files/97642627831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wetitoditasenubekuxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7230/4790/files/rajotesiduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2436/files/free_mp4_editor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5212/1762/files/small_engine_repair_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/48586443789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0950/7487/files/gowutikamereloget.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/87499096396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/benediktinisches_antiphonale.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_off0000b5a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5A4 5384 bytes
SHA-256: 9c7fee5ba48e3c1eea9dac074b0666372ce91f30ece5df989a14bbd472a496a8
font_01_sfnt_off0000c7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A4 15804 bytes
SHA-256: d0b4bb3f7c0b53a5bbf347dda58a22f3a2e9480fe2982a8d95721f905f2a2d1f
font_02_sfnt_off0000f5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E2 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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