Malicious PDF — malware analysis report

Static analysis result for SHA-256 01009f873396c3d1…

MALICIOUS

PDF

86.5 KB Created: 2021-03-20 08:39:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65dbe58e95cb31c509d64aa86915f573 SHA-1: a99bdffc732feb52a1c02bcf02d48c0d7fb7da26 SHA-256: 01009f873396c3d1300d4206cfb34c450b2e58ff34e2a4a27e21824d7b21afe3
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://lozipotod.ru/wix?keyword=ross+poldark+pdf+english', suggesting a phishing lure related to a PDF document. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, indicating it might be a generated document used to mask malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://lozipotod.ru/wix?keyword=ross+poldark+pdf+english
    • https://cdn.sqhk.co/fosulavale/ahc5oat/62708749229.pdf
    • https://cdn.sqhk.co/gukugifixija/3xShaJk/calendar_2021_with_holidays_printable.pdf
    • https://jefabulovonaju.weebly.com/uploads/1/3/1/4/131438419/retawode.pdf
    • http://weinmvc.net/american_buffalo_resort_mapf2963.pdf
    • http://trokot-newshop.online/mabeb02mil.pdf
    • http://bigpleasure.ru/what_places_give_out_free_food_on_veterans_dayoncla.pdf
    • https://zulusoneruw.weebly.com/uploads/1/3/4/8/134887175/66147.pdf
    • http://majikok.mygamesonline.org/pak_navy_jobs_2021_advertisement.pdf
    • http://brightshopbg.xyz/faria_depth_finder_troubleshootingk2vp3.pdf
    • http://dakisemakegag.sportsontheweb.net/xugonidut.pdf
    • https://cdn.sqhk.co/tefegegesuxe/ibuiOii/cooking_fort_chef_craze_restaurant_cooking_games_download.pdf
    • https://xadixolikiz.weebly.com/uploads/1/3/1/3/131380305/gofenipixijamiw.pdf
    • http://gnoogle.site/typical_interview_questions_and_good_answersdry5o.pdf
    • https://vidimepimexuja.weebly.com/uploads/1/3/4/6/134626803/a66c722862e1.pdf
    • https://cdn.sqhk.co/xidizizo/5jdd2ji/bituxaniziworarejesibofip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f70828e5-27fb-44ba-85b4-fa89a0883f4e/tenovu.pdf
    • https://uploads.strikinglycdn.com/files/ff7eb607-77ad-43ba-b218-f0df823c8918/how_to_make_machine_learning_algorithm.pdf
    • https://s3.amazonaws.com/xijuxosisomuna/74045407968.pdf
    • https://uploads.strikinglycdn.com/files/c46258d8-3890-4d35-bc22-9820ff6b430f/free_online_place_value_games_2nd_grade.pdf
    • https://s3.amazonaws.com/pegebunov/lagu_bring_me_to_life_karaoke.pdf
    • https://s3.amazonaws.com/degagaziv/red_checkered_background.pdf
    • https://s3.amazonaws.com/fewifuwu/58882273651.pdf
    • https://uploads.strikinglycdn.com/files/7b6b0d78-c94c-4a03-bef5-19e63b960e96/what_can_i_do_with_amazon_fire_stick.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_off00011212.bin
f0cc928df86c1eaf28e29147fe47fa2559d284687247e43e0d7c304b76bbf911		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11212 5376 bytes
font_01_sfnt_off00012459.bin
e57f3a112ac1c4fcaaac5162e697fc77257f7b8346ea38b4ec46e5bb47ae150e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12459 11440 bytes

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