Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6d3256acae06d1…

MALICIOUS

PDF

70.2 KB Created: 2021-01-06 20:31:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 69c915dd825fe7dca2c6f57505352600 SHA-1: f186d6567231b896ffc82276beb96444550d31a0 SHA-256: ee6d3256acae06d15436c0a223802bd9999103e89653d6cb493ee8e1c89d0678
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV also flagged this file as malicious. The presence of numerous external links suggests an attempt to direct users to potentially harmful websites, likely for phishing or malware distribution.

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
  • 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.
  • 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://ggtraff.ru/123?utm_term=office+space+meme+memo In PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/bidapi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383929/normal_5f8c610233fe2.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/pawigekixo-sopetuvizaguvo.pdfIn PDF document text
    • https://jubekufolofifi.weebly.com/uploads/1/3/4/5/134593927/6354bae04c17.pdfIn PDF document text
    • https://boxavaruju.weebly.com/uploads/1/3/4/7/134759985/vazawal.pdfIn PDF document text
    • https://cdn.sqhk.co/filomada/ijjjWOs/evolution_game_yanderera.pdfIn PDF document text
    • https://kuxodebareku.weebly.com/uploads/1/3/4/0/134042390/14334.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/76c30d49.pdfIn PDF document text
    • https://penaletaxexek.weebly.com/uploads/1/3/4/8/134886030/6d55466cc9.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/zerejibixupav/centralized_form_css.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/bostitch_6_gallon_compressor_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/libro_de_alejandro_dolina.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/laura_charles_vanity.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_off0000d972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD972 5060 bytes
SHA-256: 4a13407f6a89ca7f870b0dd0264f7706b26a00a76de96feba3488df280579039
font_01_sfnt_off0000eaa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA4 9872 bytes
SHA-256: b62ef6040e9b246371f9f40c6d3096ee204f0474c790fbad5f9c92def64362a6

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