Malicious PDF — malware analysis report

Static analysis result for SHA-256 f14c8ea07c027c25…

MALICIOUS

PDF

88.5 KB Created: 2021-02-20 15:59:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3cecf869d44bde9d466790cca9b20fa8 SHA-1: 8d57dde060256372050857ec9f91424a99a986c7 SHA-256: f14c8ea07c027c2560b9b397cf4bb9e4980019388eccbee224b9174e17a198c3
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, with one prominent URL suggesting a phishing or malicious content lure related to 'The Nicomachean Ethics Book 2'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external URIs points to an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=the+nicomachean+ethics+book+2+summary PDF link annotation
    • http://4gusevshop.space/poblano_pepper_recipes_soupcz5o5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371800/normal_5fee1d354cb41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416501/normal_5fe6d0bd0b5b0.pdfIn PDF document text
    • http://merishwheelrecords.com/flyer_templates_ms_worde6q97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497358/normal_6031048d6d1a6.pdfIn PDF document text
    • http://swiss-gear.store/54272219831omt2r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454677/normal_6022e60deb364.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456389/normal_600d4a2e62d40.pdfIn PDF document text
    • http://repair-foto.ru/nelanetulujamezatanavexcfbgc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474734/normal_6002e288ac115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402956/normal_5fd619c23fd73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481402/normal_5fe630bed19cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415543/normal_602576ff43e9a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379846/normal_60095bbda0187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420608/normal_5fd7890da4df0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00011ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA4 5396 bytes
SHA-256: dc76b77d3b7a75bab79a4867bd80f6a0d5b9c2ab9e05b80d206887c1fd883ad8
font_01_sfnt_off000130da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130DA 10548 bytes
SHA-256: 0c4ea8f6b80f767594a8e17ca96bcaff5a7d1bb5b0073956821814b17168c466