Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb82202fc42ad390…

MALICIOUS

PDF

82.5 KB Created: 2021-03-25 22:38:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 751199a6084a6e2ea6145ed588fe87fe SHA-1: 50dc8d456169d38be290c4b3b4eeec19c1d797d4 SHA-256: eb82202fc42ad390aefd61ecd77125f327349b6dee6a675504697199b2193cb9
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous external URIs, with a primary suspicious URL being https://druttle.ru/wix?keyword=mina+bonteri+voice. The document body is heavily obfuscated, but the presence of external links suggests it is designed to redirect users to potentially harmful websites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wix?keyword=mina+bonteri+voice
    • http://mantenancie.com/medline_wrist_blood_pressure_monitor_manualeqz1q.pdf
    • http://zumanidoxup.medianewsonline.com/what_are_the_4_management_skills.pdf
    • https://cdn.sqhk.co/vitelodikef/Viajgji/bilewa.pdf
    • http://gitamoravazini.22web.org/bin_sachivalay_2014_paper_answer_key.pdf
    • http://tobalalupuvobiv.iblogger.org/51358604087.pdf
    • http://welojesuvarari.iblogger.org/guide_de_l_employeur_relev_d_emploi.pdf
    • http://doweryklkq.space/kepapeneses1r3r.pdf
    • http://zekabivalejasaj.22web.org/chemistry_1_mole_worksheet_p_1_answer_key.pdf
    • http://ronifibofizet.medianewsonline.com/how_to_answer_a_question_about_your_weaknesses.pdf
    • https://cdn.sqhk.co/mikedeto/hahiigX/fishing_online_shop_europe.pdf
    • http://mavito.online/80616470095apt74.pdf
    • https://cdn.sqhk.co/sutazojawote/if2jb1B/timidakeralalamadufijal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/337fb461-af40-481f-96d9-db7362592873/zuwesivuzuwutak.pdf
    • http://vevenamefod.epizy.com/how_to_replace_a_samsung_dryer_thermal_fuse.pdf
    • http://tevefetilojas.atwebpages.com/is_the_selection_ever_going_to_be_a_movie.pdf
    • https://uploads.strikinglycdn.com/files/c86b00c8-b2eb-4e83-97e7-55c3001b3df4/how_do_i_add_effects_to_my_behringer_x32.pdf
    • http://widafasamuj.epizy.com/bangla_typing_keyboard_for_pc.pdf
    • https://uploads.strikinglycdn.com/files/6eac94de-42d5-4e55-91df-49394f64ffd4/c_programming_tutorial.pdf
    • https://uploads.strikinglycdn.com/files/61b31748-9872-48b8-820d-0d62da255735/how_to_check_if_ram_is_compatible_with_motherboard.pdf
    • http://debukigezi.epizy.com/22903357120.pdf
    • https://uploads.strikinglycdn.com/files/adb1e336-7154-42ec-8ccf-aba9f2d522fd/programmable_logic_controllers_5th_edition_petruzella_solutions_manual.pdf
    • http://lufeneweb.epizy.com/ec_declaration_of_conformity_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edcf.bin
55d3ea5453d945994690c4b0b57e3f36f3071d715f5d185b0fc30f2bdbe73a37		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCF 5920 bytes
font_01_sfnt_off0001027a.bin
318d1c1ea881ca8675c79555cc2dcb680877527079359b9fbfc27908319be56c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1027A 4788 bytes
font_02_sfnt_off000112e9.bin
f100e46c40bb97b4b66602c1417c366e4b7493a26e869510edbf2fca5e11b935		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112E9 12772 bytes

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