Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea699fab9798848e…

MALICIOUS

PDF

77.2 KB Created: 2021-05-12 09:37:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1319ebc2752723f71d2c9618e7c46b4 SHA-1: 9b6b4cf4703a0af3d4e1975c9d91973f2d803c42 SHA-256: ea699fab9798848e808bb5a0ef80947cbc6324247875710ecde16cebf5de8515
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to product reviews. The presence of multiple external URLs further supports the phishing or malware distribution intent.

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://vilenefex.ru/strik?utm_term=roadmaster+granite+peak+26+ladies%2527+mountain+bike+reviews
    • http://kerosijuvibeg.scienceontheweb.net/2793431782.pdf
    • https://cdn-cms.f-static.net/uploads/4425723/normal_603acbd873fd2.pdf
    • http://lnstagrambusiness.com/caminito_del_rey_mapaoe058.pdf
    • http://xplaintome.ru/unit_2_uniform_acceleration_worksheet_5_stacks_of_kinematics_graphsct60o.pdf
    • https://cdn.sqhk.co/mujowofapubi/gaheF8o/rc_race_tracks_in_florida.pdf
    • http://kyhni.site/android_google_manager_7p0qfr.pdf
    • https://cdn.sqhk.co/fefuxumito/BLPuVji/86107542556.pdf
    • http://novubelugalij.medianewsonline.com/letters_and_sounds_phase_1.pdf
    • https://cdn.sqhk.co/simunenij/xhhdsii/naughty_boy_meaning_to_tamil.pdf
    • https://cdn-cms.f-static.net/uploads/4480748/normal_601c7bc0491bb.pdf
    • https://cdn.sqhk.co/modesinilofe/rVj82if/65096444975.pdf
    • https://cdn-cms.f-static.net/uploads/4410727/normal_6060643b79165.pdf
    • http://otshelnik.net/is_sao_gonna_have_a_season_4km4hz.pdf
    • https://static.s123-cdn-static.com/uploads/4415527/normal_60016fa4e87fd.pdf
    • https://static.s123-cdn-static.com/uploads/4465694/normal_5ff5734e30cc9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://luxupuxud.myartsonline.com/business_contract_agreement_sample.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_off0000ef7f.bin
6688c30e2df533474db1220976f84a04cd21f1ecb255e4cce9919e8bf2607f3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7F 5960 bytes
font_01_sfnt_off000103d4.bin
f277ee1b12b5566d3c69180c44491531425c765660e358d8208180089cd12799		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103D4 10508 bytes

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