Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74e0700f7693f3f…

MALICIOUS

PDF

137.2 KB Created: 2021-03-06 02:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: eb9b445bc2e0459a8328c9baf579c589 SHA-1: ad0427d7fc50a5f7f9e3d1c91f07665bef61114c SHA-256: d74e0700f7693f3f40558da726062d790c31ce23298a368c33e236e967b2e1e9
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing malware. While no scripts were directly extracted, the PDF structure and numerous external URLs point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9206

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://pelibifir.ru/123?utm_term=what+is+the+meaning+of+good+thermal+conductor PDF link annotation
    • http://dotekebenutedex.scienceontheweb.net/international_finance_management_mcq.pdfIn PDF document text
    • http://buliwomof.22web.org/numobojakumerofesujako.pdfIn PDF document text
    • http://nenodipemuxok.mypressonline.com/pugupexi.pdfIn PDF document text
    • http://zezasarasojid.mywebcommunity.org/guba_and_lincoln.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/me_before_you_full_movie_with_english_subtitles_free_download.pdfIn PDF document text
    • http://zukesijinizik.mywebcommunity.org/pakudafelinozevusinas.pdfIn PDF document text
    • http://pawedipavixet.22web.org/interfon_bticino_manual.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/16139915395.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/how_to_improve_sat_reading_by_100_points.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://romuwoturifitam.epizy.com/38933738534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90fea8d5-6e38-47d5-9e78-e653914b853c/wifi_analyzer_mac_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7d958e1-92f2-4c84-b8eb-02dfb419b727/wasanil.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/mosajig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23db32cc-ec46-4896-8ce0-56ba4d929d02/pezulerefoxugutesomonepi.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/the_looking_glass_wars_books_a_million.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56d30d5-d4a4-4fa8-ac77-22ab8d8f9179/how_to_use_canon_rebel_xti_camera.pdfIn PDF document text
    • https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_4ca030603865431cab5f1f5e78450874.pdf?index=trueIn PDF document text
    • http://bukujinelekoxi.epizy.com/ejercicios_ecuaciones_de_primer_y_segundo_grado_3_eso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc612654-45e2-4d61-b3e8-15a187a9ab00/how_to_cut_fake_stone.pdfIn PDF document text
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_0a40f3946fe54323b88202438ed9fdfe.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a53b51-321c-4128-bb92-781d58a4aabb/the_dark_tower_2020.pdfIn PDF document text
    • http://pudolajuji.atwebpages.com/free_forklift_training_classes_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9cfa3ee-e282-492f-b7d2-eedc2da9b773/blank_map_of_washington_state_with_rivers.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000174fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x174FE 4644 bytes
SHA-256: 659a52668511d73ca7fe56cf19c72c55a7ae674a36088ae6156df423d7c3a0ed
font_01_sfnt_off0001856b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1856B 5448 bytes
SHA-256: f3583e56ac6f2059d819e0cb76668296b623a8d7ed7a0377da21189a4dd9991b
font_02_sfnt_off000197d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197D2 2464 bytes
SHA-256: 82242e8cc35a8ae9b2f41872a06450fa841d66db75e1c7986a612dc54e5e90ea
font_03_sfnt_off0001a279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A279 4788 bytes
SHA-256: db92f5332b4d29455fbb7828b029d60d4bea8116f7935f06d0d6c95f3f2ee08b
font_04_sfnt_off0001b1f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1F4 17440 bytes
SHA-256: a60e1c5fb90065a3796f4eaed04c86b1f9d15e1bcab1072b25be3ef0f6c62316
font_05_sfnt_off0001e81b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E81B 17748 bytes
SHA-256: 8a383c005a1d6b1663876a9991f93a371eb6810c268bee79bd9ec9a1337f5dcf
font_06_sfnt_off00020387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20387 3920 bytes
SHA-256: c26a42fb1b401be9935c7c793e026cdb4de15d3b3af85720b3afd3fed09e7b49

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