Malicious PDF — malware analysis report

Static analysis result for SHA-256 c23bea0fba2ac9b1…

MALICIOUS

PDF

53.2 KB Created: 2020-08-18 20:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90879edd238f8f66e0edfd1f0934f1ed SHA-1: 94a1216bd6d508f9b130e69e2c5b24a9c82fb46f SHA-256: c23bea0fba2ac9b13381a269b27be21b1b1dcf5e7e0a6b97df7c0b2007faab28
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search results, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the heuristic firings. The presence of numerous links to Shopify domains suggests an attempt to blend malicious links with legitimate content to evade detection.

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=blackbird+beatles+chords+pdf In PDF document text
    • http://files.thewardrobeletters.com/uploads/1/3/1/8/131856919/08ba2.pdfIn PDF document text
    • http://files.edwardkentwatson.com/uploads/1/3/1/4/131454770/gogavutip-jivogusuki.pdfIn PDF document text
    • http://files.hikingnewfoundland.com/uploads/1/3/2/6/132682282/e682f2.pdfIn PDF document text
    • http://files.healthblc.com/uploads/1/3/0/7/130776058/levokitulovenu.pdfIn PDF document text
    • http://files.shopsuper-nova.com/uploads/1/3/1/8/131856212/9d35af6d1.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/1/0433/0032/3478/files/car_seat_poncho_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/4981716563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/fugexeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/kijoditenis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/zexufemuxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/maths_problem_solving_worksheets_ks2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/fipiwulaguropevuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2849/6036/files/sidapibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/rufilukuxasenoxupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6968/6431/files/flush_by_carl_hiaason.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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_off00006dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD9 5496 bytes
SHA-256: 82e0607294ae083a676b49435ea449f86035dfa2924f1db7fed6190c752445ef
font_01_sfnt_off00008078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8078 15364 bytes
SHA-256: 086d8febc5291a7c1d156002a62ff1d5489f17924ccd0845878b07b800c3172f
font_02_sfnt_off0000b096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB096 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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