Malicious PDF — malware analysis report

Static analysis result for SHA-256 48228bc182803881…

MALICIOUS

PDF

69.9 KB Created: 2021-04-03 00:29:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c867e3353611964a0b60ef344460206d SHA-1: b438a174e4119b890ee040bbc59bc012d189a38c SHA-256: 48228bc182803881ed344cba7bd4004cdfdbb9273978c7a27a75b103d60bb285
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. It contains an embedded URI pointing to 'https://kuzutuzo.ru/wix?keyword=beats+pill+user+guide', which is likely part of a phishing or social engineering scheme to trick users into downloading further malware. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the presence of the malicious URL and the strong detection signals point to 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://kuzutuzo.ru/wix?keyword=beats+pill+user+guide
    • https://cdn.sqhk.co/mipijotom/fhfjejj/dcs_modern_air_combat_price.pdf
    • http://smartcreditscore.info/dell_inspiron_3847_motherboard_diagraml844y.pdf
    • https://cdn.sqhk.co/kubabulukod/nXOjcbA/lunekidasevi.pdf
    • http://betmoy54.com/jigakuxuxiwolalxsb2f.pdf
    • http://nesobaka3.xyz/report_injured_wildlife_canberra1g8sb.pdf
    • https://cdn.sqhk.co/gukomoluda/p2hb7li/97572684346.pdf
    • http://wopisam.iblogger.org/xavarageg.pdf
    • http://merovew.xyz/kujegigeboxumexateravow24d27.pdf
    • http://ifeelgood.club/86428333355sg3ao.pdf
    • http://arenaprobet.com/intermatic_timer_manual_et1125cpd82e5n1w.pdf
    • http://trysoda.pro/which_subjects_are_needed_for_mechanical_engineeringtc38j.pdf
    • https://cdn.sqhk.co/livulopo/gdogehd/modern_cover_hunter_multiplayer_3d_team_shooter.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://finezifor.rf.gd/incident_report_form_uber.pdf
    • https://uploads.strikinglycdn.com/files/5c57d67f-7771-440e-98bb-1d793889d2b9/30731962755.pdf
    • https://uploads.strikinglycdn.com/files/a6cb793d-a83d-4c83-8fe6-901b80ce45f9/can_you_breed_daphnia.pdf
    • https://uploads.strikinglycdn.com/files/e4c04c53-adb3-4ab4-a1f3-49337a990dd5/dog_man_and_cat_kid_read_aloud.pdf
    • https://uploads.strikinglycdn.com/files/08115d64-b61b-471e-9bc2-479aa9a7f7f1/how_to_install_diono_radian_3_rxt_rear_facing.pdf
    • http://miruwofewap.rf.gd/85478937545.pdf
    • https://uploads.strikinglycdn.com/files/7a5ea81e-378b-4575-aadd-8750b01766c5/10813974065.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_off0000d39e.bin
ae81fa03366511f4755e7279488a39b652c137d5d14440739a58773542908b8b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD39E 5176 bytes
font_01_sfnt_off0000e545.bin
ad269452aa44fe6446745b212b494876d18e0e8bdf03e22ede708a86d4caf30b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE545 11512 bytes