Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4f2e0cf85851b7…

MALICIOUS

PDF

90.7 KB Created: 2021-03-20 19:46:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5303ee386cea3ec68882eeb30cc17146 SHA-1: a24a2e95286aa3febd826c701449bc11bf6a1e6c SHA-256: ca4f2e0cf85851b7165e0e3bb2c873e0456aa1bbae8ef5c78f131fe040b45c60
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL, 'https://lozipotod.ru/aws?utm_term=hoover+carpet+shampoo+cleaner+solution', suggests a phishing or scam attempt related to product searches. ClamAV detection and ML classification further support its malicious nature, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://lozipotod.ru/aws?utm_term=hoover+carpet+shampoo+cleaner+solution PDF link annotation
    • http://remont-pc.website/rot_rankle_synonymgt0f3.pdfIn PDF document text
    • http://tabikola.online/ginumiduruxoruvo4poij.pdfIn PDF document text
    • http://zabolojisag.getenjoyment.net/95840149137.pdfIn PDF document text
    • http://sosiwawivijomo.scienceontheweb.net/karpman_triangle.pdfIn PDF document text
    • http://rankingcoach-seo.com/mapa_conceptual_de_grupos_funcionales0j0x0.pdfIn PDF document text
    • http://namabal.scienceontheweb.net/nizemuro.pdfIn PDF document text
    • http://tixaman.scienceontheweb.net/ugliest_boy_in_the_world.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7e073981-ad1c-4081-8dc0-76946ba36063.filesusr.com/ugd/c4f63d_580d969808c243859d4543e391898061.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tumuzu/sefokemisosi.pdfIn PDF document text
    • https://c18d7360-3707-4bf1-9d6f-52ba7510fa17.filesusr.com/ugd/76cb06_3a4bfa9a9a744876a363371a29951cd8.pdf?index=trueIn PDF document text
    • https://436240a4-ef10-404e-ad90-c5cab949c7af.filesusr.com/ugd/3fb742_2466d934f2424920b62d14bfbac0f63a.pdf?index=trueIn PDF document text
    • https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_98a8842226dc4727832833b3daaec583.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/rerigiriwanolafiguja.pdfIn PDF document text
    • https://411be8f8-4ba1-40b5-9edf-cc4a2c3d5ecc.filesusr.com/ugd/a86d68_820ed0467e7d4a76a2486e50c61a495e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/taguxif/35323170955.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/osmosis_lab_report_rubber_egg.pdfIn PDF document text
    • https://6e678f60-abc6-404c-883a-cd1729fdffee.filesusr.com/ugd/e4291f_ac7e0a3c12764add88edcca5cfcf2f28.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/76901397144.pdfIn PDF document text
    • https://34570882-574e-4d25-8c0e-d8b9b6c2967f.filesusr.com/ugd/cb2bed_2a0a2c4d21b0408fb6f4336f9297fe78.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fedure/migovi.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12582 5192 bytes
SHA-256: e914535003196eb92de0184d76c4c1cd93e5fa62d88323c2fe32de50d1183cd1
font_01_sfnt_off00013704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13704 11348 bytes
SHA-256: 9afe55af7513d5583cee8ab9651643afe08c815b1e19f90acf2f57dc9e3bd03b

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