Malicious PDF — malware analysis report

Static analysis result for SHA-256 5971b504f239fbac…

MALICIOUS

PDF

100.5 KB Created: 2021-04-01 22:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6a9f1a7f68e06e5342f19dd5fa5159e1 SHA-1: 8b5ede5aaee4047b6840bfb7021c822af37f7047 SHA-256: 5971b504f239fbac6fae510b6fdb0e0480f80b470c4f832904e6ef6106615933
116 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://xezojetit.ru/123?utm_term=asean+china+free+trade+agreement+pdf PDF link annotation
    • https://cdn.sqhk.co/kujufemom/i4o9Uhd/playstation_app_for_windows_7.pdfIn PDF document text
    • https://cdn.sqhk.co/regavebike/aifjjhj/epic_fun_run_3d_games.pdfIn PDF document text
    • https://cdn.sqhk.co/vizejagojib/jb9jggh/99619265370.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467576/normal_5fec8474132b2.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/qgeghZA/apple_tv_4k_playstation_controller.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486742/normal_605bbfc6cd7a3.pdfIn PDF document text
    • https://cdn.sqhk.co/vofepubot/gTJjjib/jevatulasulazanobikoxivom.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/6gejgWm/cinelux_plaza_theater_campbell_ca.pdfIn PDF document text
    • https://cdn.sqhk.co/suzagofi/sibFSha/silunezamotegod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392667/normal_602a50b8f07cf.pdfIn PDF document text
    • https://cdn.sqhk.co/ribovonubod/hpDQif3/19015479576.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9a055173-2db2-40b9-9e59-853b48e7c363/ghostwise_halfling_5e_tools.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ad4d80d-993a-4e24-b35e-a419636f9e27/55216036724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e30ce5d3-8f62-486c-864d-5604ff75e3ef/how_to_improve_your_memory_quickly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/004609da-1692-4585-9fba-0ddaad28e272/46338553844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45286781-edaa-4744-b0a6-377df46a7311/power_transformer_sizing_calculation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9398304-0341-495c-9ca2-8fc3e0004481/lenovo_y510p_bluetooth_driver_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/096f1a33-ef7c-4269-bc73-5c3a9b6b4280/olympus_om2_spot_program_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/190a271a-46d2-4ce9-8036-eb800607c3ab/30387496185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cb17795-583d-4f96-ae71-4bfb38f2f7fd/73728634632.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf15b5dd-39d0-462b-9f03-baf96304de6e/6116597049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/893407fd-cea7-456b-b766-732e6d663a1b/casio_scientific_calculator_fx-115es_plus_price.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C57 5204 bytes
SHA-256: 27dfa315fe258b5d5041fe07b91bafefa9296efe29dfd24613d6e1dca18e618a
font_01_sfnt_off00014dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DD3 12168 bytes
SHA-256: 5e2e06f68ba5178eaa1673fc75860107f9523f75736592ac6d3ff6e1dac17670
font_02_sfnt_off00017698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17698 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e