Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd9c8e04ef2e98b0…

MALICIOUS

PDF

78.1 KB Created: 2022-06-01 14:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 15eb8b9db43484a5ba939c7181a770e0 SHA-1: 7b82c02c47c72d3d03d6d9589058b5b55a1b35e5 SHA-256: cd9c8e04ef2e98b020f1bf44324ad28b40b5571a5d2ec5ee1bb35e234afc6eea
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection, indicating malicious intent. The presence of numerous external URIs, including one pointing to 'tevav.co.za', suggests the document is designed to redirect users to potentially harmful websites. The PDF structure itself is also noted as a link farm on disposable hosting, further supporting a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://tevav.co.za/YmrXLWy8?keyword=bayesian%20analysis%20with%20python%20pdf%20s%20free%20software PDF link annotation
    • http://twinmd.ru/userfiles/file/69004026735.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/38696mgoks89sk2rn154cf7ocp/kapiwowokovevipovibesumat.pdfIn PDF document text
    • https://www.synergyom.com/kcfinder/upload/files/31617359826.pdfIn PDF document text
    • https://rojumiladikeju.weebly.com/uploads/1/3/4/3/134315163/bitafiw.pdfIn PDF document text
    • https://laxedojopepab.weebly.com/uploads/1/3/4/8/134896069/8253764.pdfIn PDF document text
    • https://amigo-shop.105h.net/upload/files/84494773039.pdfIn PDF document text
    • https://solidpractise.com/files/userfiles/file/zepisosifuji.pdfIn PDF document text
    • https://bkr.jetdesign.pl/files/files/faxemowe.pdfIn PDF document text
    • https://xovokemopozok.weebly.com/uploads/1/3/4/5/134579322/favirujaxam.pdfIn PDF document text
    • http://yun2u.com/upload/files/32688264984.pdfIn PDF document text
    • http://korea-labels.com/ckfinder/userfiles/files/8924475229.pdfIn PDF document text
    • https://hotelmitrutarija.com/uploaded/files/57511836593.pdfIn PDF document text
    • https://bujufanabatoxiv.weebly.com/uploads/1/3/4/5/134598972/5731737.pdfIn PDF document text
    • https://globalybm.com/ckfinder/userfiles/files/1651210140.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/33948537036.pdfIn PDF document text
    • http://gianenricofabro.com/userfiles/files/45825303451.pdfIn PDF document text
    • http://eegbiofeedback-leszno.pl/userfiles/file/44516153679.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/162042b7d95482---tariwasokegizux.pdfIn PDF document text
    • https://nijugarogo.weebly.com/uploads/1/4/1/9/141975857/9138069.pdfIn PDF document text
    • https://zuvumurujibuza.weebly.com/uploads/1/3/0/7/130739557/6504198.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000c6f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F2 19080 bytes
SHA-256: b6d2c5585f809842e47f7e32ac758d288d88db7766a6dc78d641de164100c961
font_01_sfnt_off0000f979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF979 10848 bytes
SHA-256: eb59d3c3724f50d01a333bc1524622aeec225c5f2b1a3d8afd26f3a9e1811a6d
font_02_sfnt_off00011284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11284 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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