Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af36474a2daae7e…

MALICIOUS

PDF

33.8 KB Created: 2020-08-24 08:51:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf1f07d8552e8b663df1c83635454c82 SHA-1: ded9a0b5865cec48484827c0a1457ed299f18ed6 SHA-256: 7af36474a2daae7e4caa2ed6f34c94686212637696210a3372d9869dcbbe6f9b
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a primary redirector identified as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure for a video song, combined with the malicious URL. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to a link farm designed for SEO manipulation, likely to distribute malware 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.ru/pify?keyword=dorika+assamese+full+hd+video+song In PDF document text
    • http://vitodupuj.baderministries.com/uploads/1/3/0/9/130969060/zoxenakef.pdfIn PDF document text
    • http://xarumeb.inaded.org/uploads/1/3/2/6/132681670/rafevenanagole_mojuxo_favoketizonu_bumejiz.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/1/0431/1249/7312/files/bufezagige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4774/5698/files/grafoil_gasket_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7945/4111/files/bhagya_chakram_naa_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/zewovudibimijumusol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/coreldraw_x5_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7490/2430/files/adolescent_needs_and_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/ford_tractor_parts_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/free_mechanical_reasoning_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/fezugiwida.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 1

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_off00004758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4758 5444 bytes
SHA-256: ef33d62a83c873ccd5cca5f0d8740b24f176f18833f1139572fab1f6bb6e4735
font_01_sfnt_off000059ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59BA 9672 bytes
SHA-256: d098323849bade5a6662da5f41b7be6aceef3ff87cac2dd6714041e83b3e2b92

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