Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4fb04db02f49c38…

MALICIOUS

PDF

174.7 KB Created: 2021-05-08 00:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 57c5fa56e0f8e322061362b02d165156 SHA-1: e47b4e60f79070df15a382eece440ad36209e011 SHA-256: c4fb04db02f49c38bd548a8280e8b0b2bb1fbc9bfd4ceed5bf57e4e646751561
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable hosting, and one prominent URL suggests a lure for a 'michael jordan the life pdf free download'. This pattern is consistent with phishing or malware distribution, where a seemingly innocuous document is used to redirect users to malicious sites. No scripts were extracted, but the overall structure and URL usage point towards a phishing or downloader attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/strik?utm_term=michael+jordan+the+life+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/woragumokewi/KYngghc/download_vertigo_racing_mod_apk_1._0._4.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/eqKjazo/dhoom_3_nepali_box_office_collection.pdfIn PDF document text
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/6581092.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/will_the_lg_stylo_5_get_android_10.pdfIn PDF document text
    • https://sonelalakilo.weebly.com/uploads/1/3/4/4/134400406/duxomumawuvuleg_zolas_tikixugosu.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/9036029.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/jcEUQh8/temple_jungle_run_game_download_uptodown.pdfIn PDF document text
    • http://fezufizibum.mypressonline.com/mixed_approach_to_research.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/golds_gym_xr45.pdfIn PDF document text
    • https://cdn.sqhk.co/vadafepagij/gejafX3/gang_battle_simulator.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a87048a8-5902-491e-9859-74a321da8ac6/batevevesenedepegoxogat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f72e2d88-b2a3-4b30-8834-45d6dc9a99af/how_to_write_a_letter_of_purpose_for_scholarship.pdfIn PDF document text
    • http://kugugoroxe.rf.gd/credit_report_authorization_form.pdfIn PDF document text
    • http://dodigemadepa.epizy.com/bypass_apk_samsung_j5.pdfIn PDF document text
    • http://pemukusa.epizy.com/kedagolem.pdfIn PDF document text
    • http://lubuzozerewa.rf.gd/what_is_a_good_psi_for_a_pressure_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7498981-d496-4431-a2c9-e3b7326c4754/john_deere_zero_turn_mower_for_sale_australia.pdfIn PDF document text
    • http://valupakukav.myartsonline.com/ccna_routing_and_switching_200_125_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efb0e88a-4f44-4845-8e08-90a19acf11b5/dakapekezinojaxerizaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d52b9e49-8cd2-4b78-a594-49a58aad7cf7/how_do_i_add_a_to_my_kindle_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbdc446d-76d1-40b1-a2c7-8454a7c6aa76/zipamavezesa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000263da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x263DA 5028 bytes
SHA-256: 3dbfe3691032d2a95d6ed882eefd489f289e7b79ba80dc79445b9837442f7645
font_01_sfnt_off000274f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x274F0 12180 bytes
SHA-256: 354f34b6e1dd3a7df9f81694776b057515308453fbee7c3eda45706f50d05628
font_02_sfnt_off00029dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29DC5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3