Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3876bba7be43cd…

MALICIOUS

PDF

82.8 KB Created: 2021-03-30 04:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c750b63950e6681727636b24e1b4db9e SHA-1: 6390652b0dca4aacfa2df5f62b9a68c46b036ec2 SHA-256: 3a3876bba7be43cd578939ce93e40703e21744b83d4b1dca4b05c8db5235e177
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'dugedepap.ru', which is likely part of a phishing or malware distribution scheme. The PDF structure and heuristics suggest it's designed as a link farm to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://dugedepap.ru/wix?keyword=tera+lancer+pve+guide PDF link annotation
    • https://cdn.sqhk.co/pidodalatip/hc25tjG/numemugifafit.pdfIn PDF document text
    • http://gayerkan.com/what_types_of_termites_are_in_connecticutn3g9w.pdfIn PDF document text
    • http://idealsit.space/assignment_abroad_times_epaper_mumbai_download5ft1u.pdfIn PDF document text
    • http://tibetterrier.ru/xejobidejajalisus2mo26.pdfIn PDF document text
    • http://piredvizhnik.com/nefiseruteroskd2hn.pdfIn PDF document text
    • http://mmamba.ru/muledorenonevogoxatalizag70yxd.pdfIn PDF document text
    • http://esmoney.site/podadinu367ud.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/hunter_irrigation_controller_stopped_workingwixk2.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/KighigB/car_driving_simulator_2018_ultimate_drift_hack.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/mujhse_dosti_karoge_mujhse_dosti_karoge_mp3_song_downloadl2qo3.pdfIn PDF document text
    • https://cdn.sqhk.co/ranetixeba/ja3r1Uj/.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/hc1bjdG/crashing_season_3_episode_6.pdfIn PDF document text
    • http://grigolia-studio.ru/how_to_trade_on_coinbase_pro_without_feesoambc.pdfIn PDF document text
    • http://alexandreablog.com/titanik_filmi_trke_dublaj_full_izled64mv.pdfIn PDF document text
    • http://hamsterbig.com/empirical_probability_examples_with_solutionsr9qwq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tumasun/tixujefoduzajamomasa.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/chakravyuha_kannada_full_movie_hd_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c2821df-432f-41ca-946f-0fbeac8ee876/59524105026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f692b45f-874c-4b97-bbcc-d264ed81355c/zubaxazizemax.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/36848763607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78756e39-c8cd-4bbe-9616-32970e64a118/essential_facts_about_the_canadian_video_game_industry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88552cbc-2193-4766-9b34-930925bc16de/what_element_is_in_every_living_thing.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/creative_drawings_embroidery_software_free.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10829 5072 bytes
SHA-256: 348859f5b35beb470752a8197291b4133f7d681947bf8353a9706134e54438bd
font_01_sfnt_off0001197d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197D 10796 bytes
SHA-256: 688c90ab7e1ca7452d5ae32cfc894b3c17614dd02c72f8b0ac090b0cc4a52e3e

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