Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af2226ff679f3f1…

MALICIOUS

PDF

74.0 KB Created: 2021-03-06 21:45:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a432ca99af85a9d5c1f8047944f2522d SHA-1: 7288de6fadfd800d97976195d07c9d7eaeafdd2b SHA-256: 8af2226ff679f3f1b2e55aa678056a3433b8f278607ff310af607fbd8ca4bce8
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 high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a malicious payload or redirect users to a phishing site. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Diary of a Wimpy Kid' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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/123?utm_term=diary+of+a+wimpy+kid+movie+3+full+movie+online+free
    • https://cdn-cms.f-static.net/uploads/4502245/normal_5fe970362b145.pdf
    • https://static.s123-cdn-static.com/uploads/4499300/normal_5feb454fcd7d8.pdf
    • https://cdn.sqhk.co/risenulowo/bpidHk8/pixel_survival_2_master_chest_drops.pdf
    • https://static.s123-cdn-static.com/uploads/4484814/normal_5feb0800e410f.pdf
    • https://cdn.sqhk.co/putizimetiwe/hhhfuif/space_engineers_mods_folder.pdf
    • https://cdn.sqhk.co/xeduwukaxusa/nidijwV/84897049842.pdf
    • https://cdn.sqhk.co/gewewoturila/Ugfhjja/74273491307.pdf
    • https://cdn.sqhk.co/pawekenu/apbxhgD/78709075230.pdf
    • https://cdn-cms.f-static.net/uploads/4381289/normal_602d0b77afbae.pdf
    • https://cdn.sqhk.co/sizebadit/ihfiigj/skyscraper_cast_name.pdf
    • https://cdn.sqhk.co/dozumapufa/fbYhdhc/best_races_at_daytona_500.pdf
    • https://cdn.sqhk.co/wugoselubiki/ieHjbhh/samsung_music_player_app_for_windows.pdf
    • https://static.s123-cdn-static.com/uploads/4390324/normal_5ff854a9ea991.pdf
    • https://cdn.sqhk.co/gabixeme/c0hgLid/vavuja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lorifawuvawot/are_lg_washers_dependable.pdf
    • https://uploads.strikinglycdn.com/files/8dd95147-cc28-4b3c-b2bb-8bfe81c3d1ab/83150629562.pdf
    • https://uploads.strikinglycdn.com/files/9227bfca-2a21-4a04-942f-582e8021bc87/43691433861.pdf
    • https://uploads.strikinglycdn.com/files/1840ff45-ad89-402f-ba88-7cbec59f3ebe/96035102009.pdf
    • https://uploads.strikinglycdn.com/files/9a6787e5-1760-4dc6-9e81-f9f9ade44d8c/94813408902.pdf
    • https://uploads.strikinglycdn.com/files/9505c4ee-4d57-442e-b21a-4e4d42e820d7/xavawelelejuzelilaf.pdf
    • https://uploads.strikinglycdn.com/files/cd979775-0928-49fe-bfcf-2955535239cf/when_god_says_i_am_with_you.pdf
    • https://uploads.strikinglycdn.com/files/80c88522-858d-47fc-8462-c5c3d458e8a5/how_to_tie_knots_on_fleece_blanket.pdf
    • https://s3.amazonaws.com/nopomewegobij/nebon.pdf
    • https://uploads.strikinglycdn.com/files/6e3dc6fe-126b-46ba-b8f2-f6ebb55c3711/city_mini_gt2_double_car_seat_adapter.pdf
    • https://uploads.strikinglycdn.com/files/d1b79529-b67d-4b99-89c3-11d9a06d8560/mucusless_diet_healing_system_by_arnold_ehret.pdf
    • https://uploads.strikinglycdn.com/files/0b3d0c22-edee-4171-8b4d-e45f80b83b45/bokutuduzefobivowofisakaz.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_off0000e21f.bin
2b877563d22115094aab6513405ab11ffada7562a652b83962f2dbcd73f53d33
pdf-font-stream PDF embedded font (sfnt) at offset 0xE21F 5492 bytes
font_01_sfnt_off0000f4e8.bin
de1193c9d03ea327a3379f180bd340817aeeff3b69ffed2d8ba8463db06dc3aa
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E8 10932 bytes