Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b2b2d265c2be84f…

MALICIOUS

PDF

37.7 KB Created: 2020-08-01 13:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a6cce3aec16bcea8de3d4da74b9995f1 SHA-1: 56ba0bfc48755d0c4b85f38f25b7b7650cffce01 SHA-256: 0b2b2d265c2be84f16357e2a236f6acd91bc4a5005ec72b0753c1016c7cce3f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains text related to a 'driving school' and the primary malicious URL, suggesting a phishing or scam lure. The ML classifier also strongly indicated maliciousness.

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=central+texas+driving+school In PDF document text
    • http://files.annwdesign.com/uploads/1/3/1/8/131871633/8c83bbeab438.pdfIn PDF document text
    • http://files.maxwelljc.be/uploads/1/3/1/4/131411542/xaxeno_wirob_gulevufej_lepugofipuna.pdfIn PDF document text
    • http://files.chaku.com/uploads/1/3/1/6/131606046/6223546.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/1/0435/2350/6336/files/73240650102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6279/5171/files/26807588991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/52861755327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/wavizisutimoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0242/0644/files/43794828871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/tixanoxuzowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/fupevujetizifububipas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6766/9654/files/23933212067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62654677968.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/gezukisitenuzuwuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0530/3205/files/24907313821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/53960270930.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 4

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_off00005651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5651 5232 bytes
SHA-256: 838668506dfa4a2c346c51164312bd0bbea106ae6a8395dd880dae94be92bd56
font_01_sfnt_off0000681a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681A 9932 bytes
SHA-256: a078c279cc8549f608e83de64a03bf796d6f4443444f8a95f1551386e873191d

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