Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb3b0d13d0ecc3a…

MALICIOUS

PDF

80.3 KB Created: 2021-05-05 18:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a28e81b903315901d867413117e27929 SHA-1: 515163fbf85759ef1ac5cd17b6e4d2e855c5f750 SHA-256: bfb3b0d13d0ecc3ac63acf2f3dc8d26782d8a7e33822822b19188cb99ddb77cb
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating an external URI and is flagged by ML classifiers and ClamAV as malicious. The embedded URL, 'https://vilenefex.ru/strik?utm_term=garmin+2699+manual', is likely used to deliver a phishing lure or malware. Although no scripts were explicitly extracted, the PDF structure and malicious URL suggest a phishing attempt.

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://vilenefex.ru/strik?utm_term=garmin+2699+manual
    • https://cdn-cms.f-static.net/uploads/4412584/normal_6023ca8422780.pdf
    • https://cdn-cms.f-static.net/uploads/4373264/normal_6059a72b3efe4.pdf
    • http://kuvusobapi.iblogger.org/badal_movie_hd_video.pdf
    • https://cdn-cms.f-static.net/uploads/4452400/normal_5fda47794d6e8.pdf
    • http://uptodate.site/81064427929ierzv.pdf
    • http://doucheapp.xyz/denezugasabajojuzifufogog9uffq.pdf
    • http://lnstagramsupportinfo.com/texaloterougekj.pdf
    • https://static.s123-cdn-static.com/uploads/4465539/normal_5fc6d8ce2cb08.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zaxatuparogojix.epizy.com/55423770465.pdf
    • http://rajiwewovipu.epizy.com/ancestral_quest_15_user_manual.pdf
    • https://uploads.strikinglycdn.com/files/4d37c904-3e86-4537-91a3-5cc826ea501e/compare_and_contrast_examples_of_inherited_and_learned_traits.pdf
    • http://rabuwupitakif.rf.gd/dasodanubuzopazuxin.pdf
    • https://uploads.strikinglycdn.com/files/9617aafd-22fb-497f-9333-7c81f5c5ad00/windows_7_resource_kit.pdf
    • http://zukepeva.rf.gd/44277929347.pdf
    • http://ralirajuz.atwebpages.com/12584823305.pdf
    • http://xakarejosav.epizy.com/86382816597.pdf
    • http://pemojam.rf.gd/2388673773.pdf
    • http://tuwutexo.onlinewebshop.net/garmin_approach_s60_premium_gps_golf_watch_with_black_leather_band.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_off0000f9a9.bin
df53094b2b808ca7405bd58b3f0269dd311bd2c0c1a4d8d60f8a79ef8c8b8238		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A9 5124 bytes
font_01_sfnt_off00010afd.bin
d7354bc1cb3be0e7d00e37bed3447a9dfdd5741b97ad164d1a382857b0889dce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFD 12216 bytes

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