Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b36a622b4e4bb68…

MALICIOUS

PDF

48.0 KB Created: 2020-08-08 06:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 397842416f03c9fca12b706a7a420fa6 SHA-1: d3a32af20f923a7a250370e169cc90f250c3969a SHA-256: 0b36a622b4e4bb6853ac30abe358f314e02cc40db55d2100e67fbc948daf925f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users into clicking these links under the guise of providing psychology topics. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to distribute malicious content.

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=psychology+topics+pdf In PDF document text
    • http://files.burstpublishing.com/uploads/1/3/0/8/130814065/wezevuwuve-kujawativov-weverakaxuke-xakatepikij.pdfIn PDF document text
    • http://luxugame.tranbcreative.com/uploads/1/3/1/3/131383544/6348880.pdfIn PDF document text
    • http://files.wnyccda.org/uploads/1/3/1/3/131383283/3391158.pdfIn PDF document text
    • http://files.gethealthyknox.com/uploads/1/3/1/1/131163859/rosevesedosaj.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/1/0430/4519/1841/files/bosquejo_del_libro_de_romanos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4832/8603/files/33632671077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70474217151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3235/4711/files/64759615539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/38746447131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/kaxokesexamaxetirukorowel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9709/5333/files/raruwirubenuravod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5173/6471/files/ni_no_kuni_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/vifid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/dezerarotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/lumiliwulajidedewis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/27123708966.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_off00007e23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E23 5212 bytes
SHA-256: e73ebbf4ab9bcac3ddae8a56e80b6244c157ea9e332e869ebcf7e0e5591a70ec
font_01_sfnt_off00008ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF4 10248 bytes
SHA-256: 6847547b6fe94b5fafc4c58211aceb4316910a44f0ca6729f79b6158554823c5

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