Malicious PDF — malware analysis report

Static analysis result for SHA-256 9376c1230d8a3a4b…

MALICIOUS

PDF

77.9 KB Created: 2021-04-03 13:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c47f807e565c4b93ea620ee8ce886018 SHA-1: 99e97847191685092995db0bb678f187021608d0 SHA-256: 9376c1230d8a3a4b5b02531bc217e2090174314d5a53f0487f694291867c8142
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary focus on directing users to 'jumiwimov.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to exploit users by leading them to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://jumiwimov.ru/award?keyword=workplace+diversity+pdf PDF link annotation
    • http://fowironomuk.iblogger.org/6th_grade_common_core_math_word_problems.pdfIn PDF document text
    • https://cdn.sqhk.co/jefigujaxev/hc2kM1m/download_game_football_tycoon_mod_apk.pdfIn PDF document text
    • http://foguwefo.iblogger.org/imperative_sentences_examples.pdfIn PDF document text
    • http://zoomita.fun/2453068597700ihl.pdfIn PDF document text
    • https://cdn.sqhk.co/metajewamiva/Ije7Xid/raspberry_pi_2_model_b_header_pinout.pdfIn PDF document text
    • https://cdn.sqhk.co/jememobak/jjaQhgd/infinite_flight_simulator_full_cracked_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/pukefoxer/fZhajfm/34513075462.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/7Widohe/pilot_g2_pens_sizes.pdfIn PDF document text
    • http://toxixujisapibib.22web.org/fanuko_sociologija.pdfIn PDF document text
    • http://maska-respirator.com/vunalijebajoradoljw3gh.pdfIn PDF document text
    • http://it50save.info/foxit_editor_crack_downloadu5u91.pdfIn PDF document text
    • http://marketitaly.info/minn_kota_terrova_i_pilot_remote_problemsf7ouc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gidetux.rf.gd/87219004528.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de5f355-bd8a-490f-b9a1-5fe0a2d26fc8/canon_rc-6_remote_switch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90a5e9be-b31a-4d20-8df0-61e989213baa/dafemiguketilok.pdfIn PDF document text
    • http://xofukadebinomo.epizy.com/cantidad_de_liquido_amniotico_normal.pdfIn PDF document text
    • http://vejimugar.epizy.com/child_care_information_services_butler_pa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5818bcd5-29ee-4c4b-bb0a-cf11a0c3a2f6/tipos_de_bomba_hidraulica_mecanica_automotriz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd9fefe7-6a81-4cea-ba8f-193ebdc7afa6/56282728509.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4db5a2da-71fc-4d02-887c-6e93dc053167/zenewegowujexujime.pdfIn PDF document text
    • http://gugefojekasarul.epizy.com/action_photoshop_cs6_free.pdfIn PDF document text
    • http://jusisow.rf.gd/84674063817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/811d1eb1-c413-48e7-86ef-1bffa065815a/historia_de_la_geometria_plana_resumen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cbbcc48-94a6-4743-8efc-bffd20d4c0cd/lizevulinugamobafuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1df91cf-34de-45ff-be27-3f0a41394c15/how_to_use_pmd_rose_quartz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfe71c9c-9231-460c-b973-5dacd0bc4c67/94155092238.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_off0000f60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60C 5388 bytes
SHA-256: 2e45ab878820da89c1f238898c7d43d7153307e1bdb39b7d2d10ebeea16720d8
font_01_sfnt_off0001088a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088A 9940 bytes
SHA-256: a9aef075aee0f05e1c9f7a8582861eb05df00cc225eb88337313e6a4433dc96c