Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a84c416431a723…

MALICIOUS

PDF

97.5 KB Created: 2021-04-06 03:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db138524e6bd82521b3c9828159f6427 SHA-1: 527fe79d50522a8d3938049e86581c44613553c2 SHA-256: 68a84c416431a7234a84c299ac3a47f0bc3621c865a92c58a3d68dcc54651aeb
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'jottigo.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a book title, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jottigo.ru/123?utm_term=miracles+happen+brian+weiss+pdf+free
    • http://wersita.space/dusagesuboqeniv.pdf
    • http://razagewodun.iblogger.org/download_game_x_plane_flight_simulator_mod_apk.pdf
    • http://microbestdigitalmeter.xyz/sobujumelokerilufedenogim4qwqj.pdf
    • http://wirobigi.medianewsonline.com/95120387228.pdf
    • http://wojurimaxab.mywebcommunity.org/career_paths_cooking_download.pdf
    • http://pofaduxiruk.getenjoyment.net/tobubesupiw.pdf
    • http://saxefitipar.iblogger.org/tokujepumapedobumiwo.pdf
    • http://nedavupagisezim.mygamesonline.org/womonalumunebinokul.pdf
    • http://bizifemodefi.mygamesonline.org/texas_bill_of_sale_for_car.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/paxivogedewilu/dota_underlords_guide_tier_list.pdf
    • https://s3.amazonaws.com/daraniwekamidir/graphing_systems_of_inequalities_word_problems_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/d42bcd92-da03-4ad9-b2fa-0df71c69c472/robin_williams_design.pdf
    • https://s3.amazonaws.com/bitizopovopaso/benin_city_music.pdf
    • https://uploads.strikinglycdn.com/files/30d7ab1f-3f47-45e5-ab71-92e215b6fb60/32969463822.pdf
    • https://uploads.strikinglycdn.com/files/8647644f-d62b-421f-bfee-7c3376bbdb31/samsung_srd-1654d_default_password.pdf
    • http://gejevebo.epizy.com/57865735546.pdf
    • http://pazoluno.epizy.com/83640265345.pdf
    • https://s3.amazonaws.com/zonivezada/ziguniweboparozexawifizef.pdf
    • http://vorisenunajix.myartsonline.com/app_keeps_stopping_android_studio.pdf
    • https://uploads.strikinglycdn.com/files/604ac6a2-e023-4b50-80f2-14a167a02a1f/craftsman_315_garage_door_opener_remote_battery_type.pdf
    • http://zuzopejorexa.onlinewebshop.net/58895569365.pdf
    • http://tunufefenus.rf.gd/36830364920.pdf
    • http://tiredosutozol.atwebpages.com/12984431022.pdf
    • http://duwemanuwixam.atwebpages.com/varicela_neonatal_tratamiento.pdf
    • https://s3.amazonaws.com/xujitezu/age_to_read_trials_of_apollo.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_off000143a0.bin
2536bd5b2240974f3154ba92810fad1f3c7ef6fb834cc671bf999b26ed101946		 pdf-font-stream PDF embedded font (sfnt) at offset 0x143A0 5480 bytes
font_01_sfnt_off0001564f.bin
00ef8c550ed71333790041ed334ad1d6db40c4fc8ad107691a2bba02fb99da56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1564F 10028 bytes

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