Malicious PDF — malware analysis report

Static analysis result for SHA-256 074aff28de675210…

MALICIOUS

PDF

75.2 KB Created: 2021-03-23 11:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58629c472d2bc02c1aed2231453cbdb7 SHA-1: dd3317b01137a75d89dd3b5096887a9a2305ff2e SHA-256: 074aff28de675210a6a64f59df8b0ddf0dcc5b7078449b6efc107b7fb97e794a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a phishing attempt by ML classifiers and ClamAV. The document body, though heavily obfuscated, suggests a lure related to 'language games activity based learning'. The presence of an external URI indicates an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/award?keyword=language+games+activity+based+learning+pdf
    • https://tulovituvo.weebly.com/uploads/1/3/4/2/134234708/6258028.pdf
    • https://betozuwozoz.weebly.com/uploads/1/3/4/1/134108580/zujiwimisexadip-botikopapes-rivonexebanezaz.pdf
    • https://cdn-cms.f-static.net/uploads/4383917/normal_60155b8eb3366.pdf
    • https://posanawefu.weebly.com/uploads/1/3/4/7/134711745/dujaxigufimaxu.pdf
    • https://cdn-cms.f-static.net/uploads/4391008/normal_602392898c34e.pdf
    • http://look-hotel.com/oreck_xl_2000_parts_diagramyzrpc.pdf
    • https://talunijepi.weebly.com/uploads/1/3/4/5/134599753/763661.pdf
    • http://universe1.space/mulewidixexixesegune8hsrb.pdf
    • https://xezafeliwi.weebly.com/uploads/1/3/1/3/131381443/407766.pdf
    • http://takipleskazan.org/art_history_major_nyup38fw.pdf
    • http://bubble1.space/ghana_police_admission_formsg5rxo.pdf
    • http://eglo.club/will_there_be_a_eragon_2_moviehgrq0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fojakosi.atwebpages.com/surah_ayatul_kursi_in_english.pdf
    • https://s3.amazonaws.com/mizeteb/gawupivigebuki.pdf
    • https://s3.amazonaws.com/wupagivoz/the_crown_cast_season_3.pdf
    • http://pulitisagot.atwebpages.com/43192762411.pdf
    • https://s3.amazonaws.com/luropiw/ansys_apdl_guide.pdf
    • https://uploads.strikinglycdn.com/files/bf4e49d8-a961-4cfc-87c3-6518bb119964/pelogoliposisekuvofup.pdf
    • http://solezod.myartsonline.com/24132751440.pdf
    • https://uploads.strikinglycdn.com/files/d4b091ac-2e3e-47fb-bef7-ed216aca257e/petizuvufofaruzenelene.pdf
    • https://s3.amazonaws.com/lebejos/red_sparrow_book_review_goodreads.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_off0000e723.bin
8bd073ad0cef005e592564e0f8bce2d7fc369ed89f1531572027ed6bc4b9d07b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE723 5716 bytes
font_01_sfnt_off0000fa98.bin
d2b87dc092b900cbf4f59bad49cd3e3c22fb2486d2bd74d0a451b2f0ac40a080
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA98 10820 bytes