Malicious PDF — malware analysis report

Static analysis result for SHA-256 5368d4e88f94edbb…

MALICIOUS

PDF

75.6 KB Created: 2021-04-04 13:31:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e847811f9403ec7f808916a6ba4f7d6 SHA-1: 4be0c556f4c0bd27cd173bacc8ceb657e02899c1 SHA-256: 5368d4e88f94edbbef6e2831e05fb105bd6f7101a18de2c3abc213b168f23f7b
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains keywords related to the embedded URL, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/wix?keyword=glock+18+airsoft+accessories
    • http://edarudost.online/aeroplane_bass_tab209ao.pdf
    • https://bolukuja.weebly.com/uploads/1/3/0/7/130739437/c50802cf2f80f.pdf
    • http://wirelessinfo.ru/lefibavevitipakewokpxjr.pdf
    • https://cdn.sqhk.co/zigotimuti/LhbD4je/bogisi.pdf
    • https://xiforamuti.weebly.com/uploads/1/3/4/6/134611992/wenamadax-mipesirakekogez.pdf
    • http://7evenrp.ru/26873411055d0are.pdf
    • https://vokubopupabilu.weebly.com/uploads/1/3/4/6/134691430/xemikejen_morakitoluseb.pdf
    • https://vofirojaj.weebly.com/uploads/1/3/1/6/131637635/xusuxatabunebuw.pdf
    • https://cdn-cms.f-static.net/uploads/4393754/normal_605c144f50136.pdf
    • http://fruittea.space/artificial_neural_network_tutorialspointskk3w.pdf
    • https://cdn-cms.f-static.net/uploads/4366316/normal_60606356c0ae7.pdf
    • https://cdn.sqhk.co/lefuwaregew/fjjkjju/sufewi.pdf
    • https://cdn.sqhk.co/nugopanage/jjJgj5U/noaa_live_weather_radar_miami.pdf
    • https://mijevofere.weebly.com/uploads/1/3/1/6/131606011/5e576772878d28e.pdf
    • https://static.s123-cdn-static.com/uploads/4485572/normal_5feb67363773b.pdf
    • http://medicinfo.online/procol_harum_homburg_piano_sheet_musicjk6rh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/guxosa/tecumseh_6.5_hp_engine_specs.pdf
    • https://uploads.strikinglycdn.com/files/4d6e6551-6dcf-4f11-85d2-fa6675a100e0/what_is_the_role_of_media_in_teaching_of_social_studies.pdf
    • https://s3.amazonaws.com/tokudapele/wisc-v_subtest_qualitative_descriptors.pdf
    • https://s3.amazonaws.com/libowebujakux/91053629344.pdf
    • https://s3.amazonaws.com/furunumaroxun/frosty_the_snowman_2021.pdf
    • https://uploads.strikinglycdn.com/files/8dc93706-c3e8-4926-90cc-647b39ed1420/are_french_door_refrigerators_reliable.pdf
    • https://uploads.strikinglycdn.com/files/bb603d4d-cedb-4a94-8532-5cf65e85f1fe/charge_magic_mouse_2_with_iphone_charger.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_off0000e8dc.bin
c50cd937648024502ed1668afdf11c71fc5fd853dd68b4735e07017b8f6c6d00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DC 5216 bytes
font_01_sfnt_off0000faba.bin
5bfa94e896a8941eae92ef321699affdf5b0305bb4c5d714e65be3d03af39533		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFABA 11296 bytes

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