Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d004223d2ef078f…

MALICIOUS

PDF

73.5 KB Created: 2021-02-27 05:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 354d821e84f889e27f1b49176537bd3e SHA-1: 3320e2b1e0105e15865000a8c46713402ae861b7 SHA-256: 2d004223d2ef078f9ca1d4cb812537e9d4cf0bd9a65a3c9affbc8fc78387022e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, and ClamAV detection indicates it is a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a game manual. The presence of embedded URLs and the ML classifier's high confidence score strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/award?keyword=electronic+battleship+game+manual PDF link annotation
    • https://cdn.sqhk.co/mowanideju/hahflhh/90515165769.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/geIgjNU/fovetaguximimerakafavi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462732/normal_60184470d6bdd.pdfIn PDF document text
    • http://criticcxck.space/72814744511qe0rh.pdfIn PDF document text
    • http://nazhivy.net/android_textinputlayout_error_color0scfo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365628/normal_5ff4917babe1b.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/xZkojhf/real_bike_racing_3d_mod_apk.pdfIn PDF document text
    • http://bio-ita.fun/number_format_javascript_like_php0k96u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416496/normal_5ffc7b9194da1.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/gcUTThc/bomber_jacket_h_m_malaysia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452374/normal_5fdfc10cdb31a.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/jfEhhgd/53944060409.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465564/normal_601078e00cdb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417422/normal_6007c056b71a9.pdfIn PDF document text
    • http://alisabor.design/bipap_a40_brochure93krb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417656/normal_6025275877263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463010/normal_60212a9bbd4ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487194/normal_6034d7785e687.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/ib0hikI/rock_free_climbing_wall.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_off0000e28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28F 5444 bytes
SHA-256: c92c61578e6891598aebfd8ce846ca15cc12fcae938163ce05b794bacb5dfd2c
font_01_sfnt_off0000f4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EE 10428 bytes
SHA-256: f0a427222c223e1bd9299ebfea886c1775513e73ae38d77c2ef2bd1394175fa6