Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a35bdcd430a028…

MALICIOUS

PDF

112.2 KB Created: 2021-03-24 10:40:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c6efc874a1d355f53475c388fc561e03 SHA-1: 1342ca9bf080faf9f394bcb4cfc8e6434845aa08 SHA-256: 08a35bdcd430a0288c46517a9bedb94ac2e9e16cd4db17a68562a5a6c10e400d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a malicious domain, likely intended to trick the user into downloading further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, and the presence of external URIs suggests a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains references to software that could be used as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/123?utm_term=vmware+vcenter+converter+standalone+5.+0 PDF link annotation
    • http://makamar.xyz/zatuderamepijovovojofotdhkib.pdfIn PDF document text
    • http://lnstagramcopyrigtservice.com/34240335923y2xd.pdfIn PDF document text
    • https://cdn.sqhk.co/xotosira/p7iddib/stoney_s_restaurant_maryland.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369331/normal_5ff7760833f15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411511/normal_5fc9e85ed0a70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444630/normal_603058e147cc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421354/normal_602f263650978.pdfIn PDF document text
    • https://cdn.sqhk.co/sugigevapure/ahidDjd/welamajozufujoduriduro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367299/normal_5ff81b42391d7.pdfIn PDF document text
    • https://cdn.sqhk.co/pinebiven/diige9L/63843192144.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/86038590132.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/23391403104.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/82002056610.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/33215322057.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/can_you_use_nespresso_pods_in_lavazza.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/minukevevizol.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/project_costing_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/watch_virgin_tv_anywhere_on_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/kufogitimusidusega.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/how_to_draw_caricature_of_a_person.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/aesopica_perry.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_off00017837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17837 5500 bytes
SHA-256: 09fb6e38a3f4792ed7d71d7081be9f012e7a872e2bdd08bab7795ea373871e15
font_01_sfnt_off00018af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18AF0 11024 bytes
SHA-256: cea7cf9a3b7aaa111eef7b56c7741c28b21472d1d4e654c37f40eca50b3a80a6

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