Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad9467307798d2f…

MALICIOUS

PDF

86.1 KB Created: 2021-03-20 10:55:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ecda504b65fba9bd65f5dca80eeb2a08 SHA-1: dc8e74c5a623d1c88efe486f3d13d3899dcc8ea8 SHA-256: 4ad9467307798d2fae3573e343940aa32b9f8702d4ff2077776be341df808d50
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with at least one pointing to a suspicious domain ('lozipotod.ru') that is likely used for phishing or to serve a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to 'los angeles freeway map pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=los+angeles+freeway+map+pdf PDF link annotation
    • http://impergamon.com/nifumibozokusar1dbr1.pdfIn PDF document text
    • http://uscarinsurance.info/1653775724wxosq.pdfIn PDF document text
    • http://posadukik.getenjoyment.net/21184353788.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/vurinenupevedibiwesajo.pdfIn PDF document text
    • https://pudexaxetodeli.weebly.com/uploads/1/3/2/6/132683251/xefosawi.pdfIn PDF document text
    • http://donbetosstreettacos.com/woodsmith_plans_combination_router_tablertjmn.pdfIn PDF document text
    • http://zoomita.space/do_graham_crackers_have_eggsxrz02.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/jglehjL/hat_trick_history_in_cricket.pdfIn PDF document text
    • https://lijuvimu.weebly.com/uploads/1/3/0/7/130775306/30b34d.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/m2HjJig/dio_steel_ball_run_la_ai.pdfIn PDF document text
    • https://milobixokat.weebly.com/uploads/1/3/2/8/132815045/romuzoxopojowosowedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d93ef7-89bb-4034-a90b-ba3f8d77d7b9/survival_backpack_kit_with_food.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79467631-c773-445a-8703-810e55e947d3/38796675476.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/refrigerator_ice_maker_not_working_whirlpool.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/causes_of_world_war_2_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/dirt_devil_power_express_carpet_and_hard_floor_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/255daca0-4faa-4d85-bb3d-204cd1b9b57f/biwixuderozitigop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c859745-3145-424b-a3c5-8335adf2c232/30224510720.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/aadat_punjabi_song_whatsapp_status.pdfIn PDF document text
    • http://xovolefewawex.atwebpages.com/bhu_b._com_hons_syllabus.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11068 5496 bytes
SHA-256: c77f669c6fa9eda5a6ed1f613135f079df14754ee937041f78ec493fb0c71fc0
font_01_sfnt_off00012324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12324 11872 bytes
SHA-256: 64dfa573e0fa5c7905ed057d725b4d037979d83d530da90435ac08fdd8e4e3a1

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