Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd01a78c32df2b23…

MALICIOUS

PDF

74.0 KB Created: 2021-03-02 03:57:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34a9f9d84f1e68ab58a1171e31238e60 SHA-1: c70e558738d9e7ad4057fb334859480d61da62d4 SHA-256: fd01a78c32df2b236201739df98251dd1630c1c1dade3363ee7c55a88236511f
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains an external URI pointing to a suspicious domain, indicating an attempt to download a secondary payload. The heuristic 'SE_REMOTE_SUPPORT_LURE' suggests the document may trick users into installing remote support tools, which is a common tactic for initial access or further compromise. ClamAV detection and ML classification confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://midufefew.ru/strik?utm_term=super+mario+land+2+dx+rom+descargar
    • https://static.s123-cdn-static.com/uploads/4489843/normal_60014aa78cc39.pdf
    • http://9gusevshop.website/somme_d_une_suite_arithmtiquenatt8.pdf
    • https://cdn.sqhk.co/xedufoga/jiichgt/zenupekebivosenex.pdf
    • http://leoidet.xyz/zupisagojadevilulixuzebirbeliu.pdf
    • https://cdn.sqhk.co/kimejijomaki/jbmhevO/11688765819.pdf
    • https://cdn-cms.f-static.net/uploads/4410415/normal_5feaf186c93a0.pdf
    • https://static.s123-cdn-static.com/uploads/4412778/normal_5ff4cb2fb30b1.pdf
    • https://cdn-cms.f-static.net/uploads/4445735/normal_60163186bb669.pdf
    • https://static.s123-cdn-static.com/uploads/4495839/normal_5ffa291ecb63b.pdf
    • http://fodefon.getenjoyment.net/waletenesotuviwodiv.pdf
    • https://cdn.sqhk.co/duponetix/gWGjcgf/35293990196.pdf
    • http://redirunna.xyz/andy_free_32_bit30gdy.pdf
    • http://helpverifedbadges.com/1579017463xhvqp.pdf
    • https://static.s123-cdn-static.com/uploads/4372377/normal_600884e0bac6a.pdf
    • http://tavafotuzefox.sportsontheweb.net/wepubuwejapoluwudelel.pdf
    • http://help-violation.com/daffynition_decoder_answer_key_page_121qg6wo.pdf
    • https://cdn.sqhk.co/wixakulu/hcjbjfu/48485687130.pdf
    • https://cdn-cms.f-static.net/uploads/4454421/normal_6023fa1a44c0f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sinusisokopex.atwebpages.com/husqvarna_450_rancher_aftermarket_parts.pdf
    • https://s3.amazonaws.com/punurum/be_happy_hd_images.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e264.bin
e3ac2dff4bf5385e107d47445fe53df6019877329d1a17d221df1def7ecb5012
pdf-font-stream PDF embedded font (sfnt) at offset 0xE264 5696 bytes
font_01_sfnt_off0000f5b3.bin
ec9060a0958e8e7e279548e2e5420bda7a18be2673ec6354910cf3af51b00cfd
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B3 10776 bytes