Malicious PDF — malware analysis report

Static analysis result for SHA-256 460b34aa274dde0e…

MALICIOUS

PDF

70.9 KB Created: 2021-06-11 12:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b0e5e1009f4fce3eaf309813e86e7580 SHA-1: cabcde69d1893a7647cc8ee09f4fcb8829ebfde8 SHA-256: 460b34aa274dde0e9fdc57c0848376fc046caff7c100c8773ec0aa60827d3bcf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to 'garglob.ru', which is likely a malicious domain used to host or redirect to a malicious payload. The PDF's structure and the presence of external URIs suggest an attempt to trick users into visiting a compromised or malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://garglob.ru/pbw?utm_term=foucault+discipline+and+punish+citation PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b918f9b9-07cb-41e6-a596-749ee8f60143/how_to_set_virtual_background_in_zoom_android.pdfIn PDF document text
    • http://mapijakemifo.pbworks.com/w/file/fetch/144590058/how_to_use_the_scrambler_technique.pdfIn PDF document text
    • http://xujefix.pbworks.com/w/file/fetch/144417213/mowovufubepepar.pdfIn PDF document text
    • http://barumena.pbworks.com/f/como_sacar_el_area_el_perimetro_de_un_pentagono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d77d4bd-7ebc-41aa-b78d-901465c7cff2/financial_management_theory_and_practice_16th_edition_ebook.pdfIn PDF document text
    • http://tusawijer.pbworks.com/w/file/fetch/144461142/34787504550.pdfIn PDF document text
    • http://rabopadob.pbworks.com/w/file/fetch/144549774/le_cycle_de_vie_des_animaux_ce2_evaluation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e16e78fc-ff41-45ac-9a95-1f1bf316a78e/bidiwuzutimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef8edf05-f4a3-40c4-821e-c50d559757fb/james_patterson_book_list_in_alphabetical_order.pdfIn PDF document text
    • http://ririgifavem.pbworks.com/w/file/fetch/145059927/arduino_project_book_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/004dcbe9-7c51-43d4-bb18-e8a1cbcc1e27/rowaguwafowil.pdfIn PDF document text
    • http://vawijoj.pbworks.com/f/53278546741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db925597-a36d-4bb8-9e4f-33f9d0cdd99a/78660904291.pdfIn PDF document text
    • http://panuduxeruv.pbworks.com/f/what_is_a_cmac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7041a811-687e-4c9d-ad8e-3978584df165/95215413888.pdfIn PDF document text
    • http://pakesobiroge.pbworks.com/w/file/fetch/144551559/24864858943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d1f3f7a-d5e4-4164-ab5c-aefc9df6093d/blackcurrant_ice_cream_recipe_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85dcd0c3-ce6b-4846-a1fe-86afd7a689a5/area_and_circumference_of_a_circle_matching_worksheet_answers.pdfIn PDF document text
    • http://godekazonigi.pbworks.com/w/file/fetch/145114920/hungry_shark_unlimited_coins_and_gems_hack.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_off0000d691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD691 5020 bytes
SHA-256: f75d7d325875702d80866cdb96286a769f10b6c7b6f7dae8412b7f4b31d69e93
font_01_sfnt_off0000e7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 10680 bytes
SHA-256: 5e71b2ade2a262406aaea9c6b4d518aac0c5c62e599d24cec4f778e3889a4c82

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