Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2ecb98edb03bd43…

MALICIOUS

PDF

70.8 KB Created: 2021-04-06 14:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0245893197bc656982c3dab718f195c SHA-1: 1de3d8d9172ab4a2980204c3494b68185570b607 SHA-256: a2ecb98edb03bd4349652397bb3b2e1fc21c927da20d4799ffd5577069f34b25
96 Risk Score

Malware Insights

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

The PDF document contains a link disguised as a search result, likely intended to trick the user into visiting a malicious website. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect the user to potentially harmful content.

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/strik?utm_term=does+walmart+sell+oreck+vacuum+bags
    • http://vaxisezawoged.scienceontheweb.net/fasasom.pdf
    • http://bagesopabiwub.scienceontheweb.net/kinubafanegevita.pdf
    • http://passive-income.ru/sq8_mini_dv_camera_pricerpv32.pdf
    • https://cdn-cms.f-static.net/uploads/4383923/normal_5fd33642d8abd.pdf
    • https://static.s123-cdn-static.com/uploads/4372723/normal_5fe40b373d9f6.pdf
    • https://cdn.sqhk.co/gonibowijum/gfheXih/lilalabusofinugusuvadab.pdf
    • http://myirn.icu/72037348453u4o8a.pdf
    • https://cdn-cms.f-static.net/uploads/4451208/normal_603d9af19717f.pdf
    • https://cdn.sqhk.co/piwizogir/LgilziR/fruit_nibblers_mod_apk.pdf
    • http://medicalpracticementor.com/limulazironugiwixul3frrl.pdf
    • https://cdn.sqhk.co/buzusodova/a23icdh/moruduvijijarew.pdf
    • https://cdn.sqhk.co/varugefezum/58XgiKI/50015018826.pdf
    • http://rasprodavaika.ru/remington_1187_sportsman_reviewebw0s.pdf
    • https://static.s123-cdn-static.com/uploads/4505699/normal_5ff258054c14f.pdf
    • https://static.s123-cdn-static.com/uploads/4381971/normal_5fed79f3325e1.pdf
    • http://kenugizi.getenjoyment.net/quantum_field_theory_demystified_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/46ce5f1d-8a33-4cf0-beb2-d50fe748658c/kirby_vacuum_salesman_salary.pdf
    • https://uploads.strikinglycdn.com/files/9d67bcce-e5cf-4e8d-b55b-2e7fe43bbd38/why_is_my_dell_latitude_not_turning_on.pdf
    • http://madepadejatutof.onlinewebshop.net/how_can_i_play_microsoft_flight_simulator_2020_on_xbox.pdf
    • https://uploads.strikinglycdn.com/files/cd78c43e-ad6c-41cb-87de-71ddf77b0678/epson_xp_400_changing_ink_cartridges.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_off0000d3d3.bin
ff3e0ca15cc92fe9389a8d18c3bfab65d07a654c7b6382081d2a4d678fe0d6f0
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D3 5472 bytes
font_01_sfnt_off0000e67e.bin
0abb3e53144e6eb0c33a79054fda20bce82cfd2833ae3181d333576c2d841644
pdf-font-stream PDF embedded font (sfnt) at offset 0xE67E 11580 bytes