Malicious PDF — malware analysis report

Static analysis result for SHA-256 957fd2443a75303d…

MALICIOUS

PDF

77.4 KB Created: 2021-03-19 00:25:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94b12c11818557b4c29f1ef72b015a67 SHA-1: 9c13140f0e951d4405369e6edac48c1f578dc94e SHA-256: 957fd2443a75303d31753ea93724f141a5a4ee028d06dbc23c37644535b2c5de
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to host or deliver a secondary payload. The document body, though heavily obfuscated, suggests a lure related to software downloads, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/award?keyword=autocad+2020+book+pdf+download
    • https://cdn-cms.f-static.net/uploads/4446034/normal_602a01b1c96fc.pdf
    • https://cdn.sqhk.co/xuzuvazol/PhahaNd/vulatobetofizofaluk.pdf
    • https://cdn-cms.f-static.net/uploads/4473340/normal_60437841e1a2b.pdf
    • http://juwolopuga.66ghz.com/vevumu.pdf
    • https://cdn.sqhk.co/tevosudav/ejhuha4/warrior_weekend_workout.pdf
    • https://static.s123-cdn-static.com/uploads/4384832/normal_5ffd26f28f2c2.pdf
    • https://cdn.sqhk.co/vugomupuzisa/Tcgiih0/color_balloons_acnh.pdf
    • http://lunowizu.iblogger.org/gakugagolugigadumugodor.pdf
    • https://cdn-cms.f-static.net/uploads/4419192/normal_6049bb9e5511c.pdf
    • http://pifumufupes.iblogger.org/53940275620.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rovikejovejoto.rf.gd/bansidhar_ke_video_2019.pdf
    • https://s3.amazonaws.com/saziwijaxodav/xukimupekarex.pdf
    • https://uploads.strikinglycdn.com/files/4a8d31a7-486b-46f4-b1a6-3e343b7f1ab6/3819754653.pdf
    • http://bakevojedu.epizy.com/free_high_school_chemistry_textbook.pdf
    • http://jejijumebiv.epizy.com/90855584079.pdf
    • https://s3.amazonaws.com/kufazete/13603171854.pdf
    • https://uploads.strikinglycdn.com/files/fddd5d16-8255-478b-8475-040c54c6affd/what_are_non-verbal_cue.pdf
    • https://uploads.strikinglycdn.com/files/b3e431d0-e435-4ec7-bf7e-6e6e90a940d9/the_wave_radio_live_stream.pdf
    • https://s3.amazonaws.com/suxuzubojut/vowel_sounds_pronunciation_guide.pdf
    • https://s3.amazonaws.com/bopuxosavubare/31319916121.pdf
    • http://gizogebinide.rf.gd/cabal_mobile_apk_english_release_date.pdf
    • http://xogowiv.epizy.com/ralokegibidoruxe.pdf
    • http://ragasusivoreta.epizy.com/37948914663.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_off0000ef25.bin
4ee29e3f25b8b0106ca999352674f31e6d1575b980bc01468807a2d39d63aa94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF25 5432 bytes
font_01_sfnt_off000101cc.bin
6f4992a9b9861c627001b9049320ea2b504aae9e9daf3fe96626fc5d31dee00a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101CC 10900 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.