Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a345b4daea6cb3a…

MALICIOUS

PDF

110.1 KB Created: 2021-03-18 03:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 06ba245b12687a5d88cfd2059fb0b534 SHA-1: 717a0b1bc210cd866b3d5b6198d05203d3884a81 SHA-256: 7a345b4daea6cb3a0a1662adf4acdf8150b2454804f50a28fcfcc31df604c3fb
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a 'download button' heuristic and an embedded URI pointing to a suspicious domain suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to software licensing, likely a lure to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://botokaw.ru/123?utm_term=crystal+reports+runtime+server+license PDF link annotation
    • http://jijuduli.mywebcommunity.org/what_is_baseline_survey.pdfIn PDF document text
    • http://erethiztzj.space/craftsman_109_lathe_for_saleeubfa.pdfIn PDF document text
    • http://pidagenavuziw.mywebcommunity.org/porunabakage.pdfIn PDF document text
    • https://cdn.sqhk.co/wirubetena/Pjdihbt/warcraft_3_frozen_throne_tower_defense_maps.pdfIn PDF document text
    • https://cdn.sqhk.co/sabepakofo/gd8YjeX/cell_sandbox_apk.pdfIn PDF document text
    • http://flowerport.store/adobe_acrobat_11_pro_triali737r.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/52592357094bv6im.pdfIn PDF document text
    • http://italysummer.space/warhammer_40k_cover_rules_9th_editiongr6ht.pdfIn PDF document text
    • https://cdn.sqhk.co/dopebuxoz/aFu6jaw/sigezelimisawamupasukod.pdfIn PDF document text
    • http://ottics.ru/refuerzo_ampliacion_lengua_2_primaria_santillanax1hqr.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/vEjj0jg/giterojufukapuki.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/yjcgdhi/bubble_fruit_shooter_farm_bear_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fixararololu/social_club_launcher_gta_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ecfdf6-7cf6-4187-b66f-2ec87f51e62c/61682069163.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/90199704440.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/4107261099.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/shooter_games_apk_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0e72b86-dda9-494d-9270-70715eac7a4b/lisemuwufemilizasovat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/206ff36b-51a8-44b6-a375-10905cefbb5a/apostol_analytic_number_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63bd91a6-71fe-4c15-b3f0-b5b2b49ed5c6/how_to_fit_integrated_dishwasher_door_bosch.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/32257339845.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000143bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143BF 2988 bytes
SHA-256: 42e3783caedf448e14fcbc75b18e161657efc393aa677f58ca9a5bff480967cb
font_01_sfnt_off00014e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E70 5148 bytes
SHA-256: 6bb62dfdb708c7f099895e7e462e1a741fda744de4871dcc9aa0a8657267d08b
font_02_sfnt_off00015fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FDF 2236 bytes
SHA-256: 337d6416420a05dbdd303242054fb0b81607403aa080aa24d751cc4156ccb357
font_03_sfnt_off000169fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169FA 12364 bytes
SHA-256: adfb95fe4478716f588e14e3631a83b82d61bbb041e8697c6cf86169882b2c42
font_04_sfnt_off0001937e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1937E 16060 bytes
SHA-256: bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d

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