Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3613765c9eba186…

MALICIOUS

PDF

39.5 KB Created: 2020-08-16 15:27:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47c2fa8344c0a97a23619f90f1ae77b8 SHA-1: bb3601c92b7ce1965275294c0054e82e49e34b18 SHA-256: b3613765c9eba1866c091c61c73108757b7d6e84c2d8fb77d39e28962e1a144e
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a seemingly unrelated phrase about school uniforms, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely to improve search engine ranking for 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.com/pify?keyword=malmesbury+park+school+uniform In PDF document text
    • http://files.chanticleer-press.com/uploads/1/3/0/7/130775286/libowagutuk.pdfIn PDF document text
    • http://files.bostondigitalproductions.com/uploads/1/3/0/7/130739789/kufuxorimi_tanubabovolus.pdfIn PDF document text
    • http://files.mhdtechnologycorp.com/uploads/1/3/1/3/131384635/safawedusut-jewiv.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/1/0428/9835/8432/files/kefemomorevogik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/98997374480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3485/9930/files/bel_ami_guy_de_maupassant_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/devenir_2018_year_end_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0108/4064/files/characteristics_of_c_programming_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0609/7570/files/advanced_excel_functions_with_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/for_loop_in_ruby.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/avancemos_3_online_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/matlab_fourier_transform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/dowonava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6726/files/74169359870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8011/3562/files/succeed_in_cae_10_practice_tests_key.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_off00005b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B74 5568 bytes
SHA-256: 58eb12b9bfd9b863999f99ace02927b25b6e736d9b5cc9250053f30bfb4639b7
font_01_sfnt_off00006e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E44 10272 bytes
SHA-256: dd89b9d43ffeeabf238d31cf1af646cc67854d830bceb570b50aa1476cffc2a6

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