Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cbb2fe246324be0…

MALICIOUS

PDF

59.0 KB Created: 2020-08-12 23:37:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fda1e79c900342b1aa30f31a90d71da SHA-1: 29b81f743342946c9adaa24d63d91360be4cc345 SHA-256: 5cbb2fe246324be0752a19a0c5f7342856455c0185dc5d34c0296a4d9cfd04a1
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, a common tactic for SEO spam and phishing. The primary link, 'https://ttraff.ru/wb?keyword=manual%20fiat%20palio%20economy%202011', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to download content that ultimately leads to a malicious site. The ML classifier strongly flagged this PDF as malicious.

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/wb?keyword=manual%20fiat%20palio%20economy%202011 In PDF document text
    • http://files.flyingcoloursmusic.co.nz/uploads/1/3/1/1/131163578/tatagosedub-wepetaji.pdfIn PDF document text
    • http://files.rosconkie.com/uploads/1/3/1/3/131379312/5510049.pdfIn PDF document text
    • http://files.valordnorwegianelkhounds.com/uploads/1/3/1/1/131163872/jezalijed.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/1/0437/7201/8845/files/important_physics_constants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/white_wolf_magazine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5221/files/28952591779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/problemas_caida_libre_4_eso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0024/8995/files/volume_formula_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/sword_of_wounding_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/83147112491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6682/6656/files/45386625992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4443/6128/files/vovavajugen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/31503561472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3757/6603/files/adhesive_intestinal_obstruction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/tewowizawip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/92251721822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/19799825301.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 3

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_off0000980d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x980D 5320 bytes
SHA-256: b2963a27cc969c0437017c375aea8cc8c2f141e7ad9754d06424f8a80d6d91eb
font_01_sfnt_off0000aa30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA30 17628 bytes
SHA-256: f1621c564dc9ceb863ebd0f0050c0b8e8727f4be728fbc4910393fc49e46b4cf

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