Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ed2dbbced733ce…

MALICIOUS

PDF

75.1 KB Created: 2021-03-01 17:09:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: a41846d1efcaa5d8ed1035bbb91c7ee4 SHA-1: 7cab0136f40b4dd07b8350cd5ff5740c05b665e3 SHA-256: a5ed2dbbced733cebe5580b1dcbce3a013e458039056e74bf95f8de2786f86a2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://pelibifir.ru/award?keyword=new+york+subway+map+art+poster+print, suggests a phishing or credential harvesting attempt disguised as a poster print. No scripts were extracted, but the PDF structure itself contains external URI references that are likely used to download further malicious 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://pelibifir.ru/award?keyword=new+york+subway+map+art+poster+print PDF link annotation
    • https://cdn.sqhk.co/fofotixoz/iiMFTTw/28131879991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_6020b8293b49c.pdfIn PDF document text
    • https://cdn.sqhk.co/pamavunawi/ihtjfji/godzilla_defense_force_android_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rokunufoleti/ipiitd4/regezorige.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489440/normal_5fe078415d5e7.pdfIn PDF document text
    • https://cdn.sqhk.co/gidenateg/V7hggfo/mobile_caller_location_tracker_app_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471996/normal_603c2178a2349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446931/normal_60101e4ba6dfe.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/cX62YTX/kiwewanavini.pdfIn PDF document text
    • https://cdn.sqhk.co/filovixedalu/hjjr1ja/bowigiburabubajemefimat.pdfIn PDF document text
    • https://cdn.sqhk.co/jomonufo/cHULZ9h/air_control_tower_for_sale_wellington.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/badodemebo/ac_dc_power_supply_circuit_without_transformer.pdfIn PDF document text
    • http://kexomuradalo.rf.gd/80245729686.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/wosaberebisimaniwesuz.pdfIn PDF document text
    • http://vovogejezubu.rf.gd/alesis_dm5_drum_kit_for_sale.pdfIn PDF document text
    • http://tavixemurivadol.rf.gd/is_a_pressure_sensor_analog_or_digital.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/adobe_illustrator_draw_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/la_ciencia_de_hacerse_rico_por_wallace_d._wattles.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA81 5300 bytes
SHA-256: 45d67b63c31ac811bf19ef7535ebe7af447d0aa6f19667086c7b960f9a7d9681
font_01_sfnt_off0000fc90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC90 10204 bytes
SHA-256: 37d598973790a832c15d94d4eb20c9269966f41b9ee894f3099f5095e2b6d25b

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