Malicious PDF — malware analysis report

Static analysis result for SHA-256 f987f1d2782f2070…

MALICIOUS

PDF

79.6 KB Created: 2021-04-02 08:19:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9782508ce18df298b4a591c88f569a4a SHA-1: 1667cfca394e2409fa1ebd377c26f6ef04efd747 SHA-256: f987f1d2782f207015dad35fca25c0be7d331de773681c3e5c1d6fd4331bd0d4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that redirects to a suspicious domain, likely intended to host phishing content or a further payload. The document body, though heavily obfuscated, appears to be related to search queries, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xezojetit.ru/strik?utm_term=how+much+does+a+baby+grand+piano+cost+used
    • https://static.s123-cdn-static.com/uploads/4463264/normal_5ffa0d185e565.pdf
    • https://cdn-cms.f-static.net/uploads/4374013/normal_602eb984bd642.pdf
    • http://ruxuzosok.mywebcommunity.org/gekabanupelojemuzev.pdf
    • https://cdn-cms.f-static.net/uploads/4476445/normal_603e40d7eb0b3.pdf
    • http://lorakuze.sportsontheweb.net/sig_sauer_owb_holster.pdf
    • https://cdn-cms.f-static.net/uploads/4469836/normal_60483843837fc.pdf
    • https://cdn-cms.f-static.net/uploads/4415935/normal_6052bb8d7872d.pdf
    • https://cdn-cms.f-static.net/uploads/4416805/normal_60506ffdf1979.pdf
    • https://cdn-cms.f-static.net/uploads/4366982/normal_602d791cc0e95.pdf
    • https://cdn-cms.f-static.net/uploads/4494888/normal_5fd3161f93357.pdf
    • http://rakadan.sportsontheweb.net/amazing_adjectives.pdf
    • https://cdn-cms.f-static.net/uploads/4454426/normal_60170cd0a386a.pdf
    • http://zejirejajedudu.getenjoyment.net/biometria_hematica_embarazo_valores_normales.pdf
    • https://static.s123-cdn-static.com/uploads/4450884/normal_5fcdae0f6eaf4.pdf
    • https://cdn-cms.f-static.net/uploads/4383704/normal_602a1fffdba6f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zepifudoxapo/54650762484.pdf
    • https://s3.amazonaws.com/taguxif/libro_de_fisica_universitaria_13_edicion_descargar_gratis.pdf
    • http://liwetagosozel.onlinewebshop.net/how_to_set_xfinity_cable_box.pdf
    • http://polilofu.onlinewebshop.net/e_marketing_textbook.pdf
    • https://s3.amazonaws.com/wiwuxot/is_saltiness_a_physical_or_chemical_property.pdf
    • https://s3.amazonaws.com/fizup/vejadeziduzizugeku.pdf
    • https://s3.amazonaws.com/feborobegibew/naruto_blazing_mod_apk.pdf
    • http://mafonevaverazux.atwebpages.com/guia_de_adestramento_para_ces.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_off0000f75c.bin
df20cacd0aeb2ebfc5db5619dd81dcc6903c97fc4ad22749d36288bca9a40a49
pdf-font-stream PDF embedded font (sfnt) at offset 0xF75C 5752 bytes
font_01_sfnt_off00010ad7.bin
86306a4509eef1475726619b54f9f7a3581c2fb93370d1196346b75be0acf9f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD7 11296 bytes