Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c78e840f18e74f1…

MALICIOUS

PDF

88.2 KB Created: 2021-03-08 03:58:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: a88882d8fd60fb2b9ea5fb10b1bba8c1 SHA-1: 839a7911936191bb18af897dd2a15937985673d7 SHA-256: 8c78e840f18e74f126f3a3c37e9d1b80b8b7c634d7d0e73b4115c881493ee4c0
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'lozipotod.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text suggesting it is a lure related to movie search terms, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/wix?keyword=letmewatchthis+john+wick PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388050/normal_6031075950689.pdfIn PDF document text
    • https://cdn.sqhk.co/rovujesox/iUnqMpr/riretamanusokaxabow.pdfIn PDF document text
    • http://zirisumiwuxi.iblogger.org/color_worksheets_for_esl_learners.pdfIn PDF document text
    • https://cdn.sqhk.co/konajera/n4agcbq/world_wind_map_real_time.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_5fca92622df60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374689/normal_604162d408bac.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/iephbE5/cross_stitch_world_cash_cheat.pdfIn PDF document text
    • https://cdn.sqhk.co/zigimovovu/dhhgjja/rurup.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://23da7c74-6e14-424a-b22a-901aa35eafb1.filesusr.com/ugd/9cc572_8aab7fc9c7a14bfcbdceaa6ab1287eaf.pdf?index=trueIn PDF document text
    • http://gunexukod.epizy.com/44856439336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa2adbbf-8400-4a10-ab92-2c52ead74fe5/98434484546.pdfIn PDF document text
    • https://c8d0f166-86fd-441b-8df5-aa5e6c6c7644.filesusr.com/ugd/f4b3af_02a309556b8443ce8e34ffd1fea62c8d.pdf?index=trueIn PDF document text
    • http://lupewozer.rf.gd/own_the_day_own_your_life_epub.pdfIn PDF document text
    • http://gegawuwiru.epizy.com/converse_plataforma_blancas_linea_roja.pdfIn PDF document text
    • http://boparozib.rf.gd/best_copper_still_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/047ce3cc-dbf8-4cd4-9936-0a358e166b46/add_and_subtract_fractions_with_unlike_denominators_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cbd279b-f3e8-4771-9ba4-a54f972a18ad/how_to_drain_water_from_haier_portable_air_conditioner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43a2c911-e764-4c22-8161-f17a74c2065b/what_do_the_words_pax_romana_mean_in_latin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41e5c7c1-7cbb-4751-b825-2681c71bf328/2006_suzuki_boulevard_c50_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ae68e28-1672-46e8-aef1-2c1ac6d30c36/how_to_rap_better_flow.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_off00010f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F34 4872 bytes
SHA-256: 407345aa735fded16e91b8b38be21312138ecc0945adf0b4ac09b36c92dd90c8
font_01_sfnt_off00011fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FAD 11412 bytes
SHA-256: 7caf580d2cbe657b3ed16ae9c827f369cf22ee3b434c26641792c220538ddc79
font_02_sfnt_off0001453a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1453A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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