Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8421dfa37738c78…

MALICIOUS

PDF

71.1 KB Created: 2021-03-17 00:26:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4aa816ff967bfe72f3a38eccba300771 SHA-1: a033493551c4f22c4182c35ea6a75e7482788cdb SHA-256: b8421dfa37738c7865b8dd6428e2ec77ea2f1c402b70c6df81bd69cb3cb8e489
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users through a deceptive document.

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/123?utm_term=bushnell+546+telescope+manual PDF link annotation
    • https://cdn.sqhk.co/xobevopu/hjhM9hi/how_to_do_cnc_programming.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/g57jjjg/hey_clay_animals_horse.pdfIn PDF document text
    • https://cdn.sqhk.co/mojubemuwek/fMzPJZi/nolan_arenado_contract_per_game.pdfIn PDF document text
    • http://agent-spv.space/punawilewolu8bj6f.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/PjcHQie/car_running_cold_start_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/xudadidi/aqJf1Py/82750613127.pdfIn PDF document text
    • http://hairhome.moscow/8851929798931yar.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/43be9d26-36e1-4e47-b60b-a379981051e0/is_google_translate_accurate_for_arabic.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/gopomigajotolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903c459e-13a2-45ec-bf33-e752265cb9dd/zefipabolufipomilon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d075df-c09c-452e-9acd-f1cf0dd47cb2/yard_machine_rear_tine_tiller_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5e7fcd6-03cc-4ad4-b46b-a9120b32d585/saraxomujanuwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0739e70b-ffb1-4490-871e-58b8e481d0a9/ps4_games_2021_rpg.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/angamaly_diaries_full_movie_cinemavilla._net.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d945e586-92fe-4c50-927b-8cdaa236f0b9/how_to_unlock_ge_oven.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/6297831248.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47bd8c31-f225-4037-95b5-8ce9470a678b/how_to_calculate_inspiratory_flow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebf38748-246d-46af-a3cf-dda393201097/95441430425.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_off0000cdd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD0 5328 bytes
SHA-256: 1c2232d84c83106f8d2a5fcb516cf55898ddb09cee46d19447eb4177891842e6
font_01_sfnt_off0000dfbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBD 9720 bytes
SHA-256: 13aff99099d93c11e81f9724ac040b73be0920fb7bebfc7d4a67d7398a6ba2e0
font_02_sfnt_off000100f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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