Malicious PDF — malware analysis report

Static analysis result for SHA-256 845ba94d36041bc6…

MALICIOUS

PDF

69.3 KB Created: 2021-03-04 20:33:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b31e4fc1ccf16a446e863f8281553578 SHA-1: e7a5865c0f097f40a1fbe3d79b1df8cf124594f8 SHA-256: 845ba94d36041bc6f294b58bea9ca816b26f26a65da3c208464cb43776117d7e
96 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to redirect the user to a phishing site. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/wix?keyword=statement+or+question+worksheet
    • https://cdn.sqhk.co/puxedimuwo/bdhgAgi/3733898355.pdf
    • http://xidufefonudug.sportsontheweb.net/51059664287.pdf
    • http://rejonanujezeke.22web.org/bloodborne_pc_window_game_free.pdf
    • https://cdn.sqhk.co/fazituku/bCaqijV/panic_button_android_app_source_code.pdf
    • https://cdn.sqhk.co/nixivezez/ggPohjO/plain_city_auction_facebook.pdf
    • https://cdn.sqhk.co/fuzokikili/exhb9he/king_followers_and_likes_hack_apk_download.pdf
    • https://cdn.sqhk.co/xulawajikigi/l2kifje/off_road_car_game_download_for_pc.pdf
    • http://vafijevimam.iblogger.org/how_to_get_your_private_investigator_licence_in_arizona.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xonaxevetaf/lagu_on_my_way_remix_pubg.pdf
    • https://s3.amazonaws.com/xuxifuzituwu/functional_foods_list.pdf
    • https://8c285b57-3156-47ce-881b-df665acc117b.filesusr.com/ugd/8d46c2_c653920396a54990b4a9406b824ebd11.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3498ed81-8d79-4b2b-b4cc-4403cf54b8f2/ver_diarios_de_una_motocicleta_online_espaol.pdf
    • https://s3.amazonaws.com/galinikagopit/8145419261.pdf
    • http://webidiwotew.epizy.com/rifazakawe.pdf
    • https://uploads.strikinglycdn.com/files/c33011b5-7160-49b9-a11d-2f5c47f070ab/95577079845.pdf
    • https://95a57b4d-a24c-4412-bd87-88f4f885d252.filesusr.com/ugd/011e4b_c72253cd10e2452aa51e29b4801de28e.pdf?index=true
    • http://zavivemigowoson.epizy.com/budget_2018_19_pakistan_in_english.pdf
    • http://siwinigap.epizy.com/70315462505.pdf
    • https://97783159-ced7-426e-9fbd-60d2bb3342fb.filesusr.com/ugd/00058f_b51a44b08d4a4847b420e6468c5ec8c6.pdf?index=true
    • http://taguloxutenafol.myartsonline.com/does_sonic_diet_cherry_limeade_have_aspartame.pdf
    • https://uploads.strikinglycdn.com/files/696cc0b6-ccfb-4a32-9298-4d707f1b4b6a/jusedo.pdf
    • http://nukivamo.myartsonline.com/best_replacement_battery_for_ipod_video_30gb.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_off0000d20c.bin
3c55b91da7408022740f163159ad51817ebee328937772b68b9c2774091d837c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD20C 5280 bytes
font_01_sfnt_off0000e3eb.bin
7f96dff2b538c37aa09c2bbe0e18cf0025d4e3e3bd49d3f68a132db158ea5b73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3EB 10544 bytes

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