Malicious PDF — malware analysis report

Static analysis result for SHA-256 46724953379b0a98…

MALICIOUS

PDF

74.2 KB Created: 2021-04-03 15:16:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0497779020b34cfc5ac3c1c19408a010 SHA-1: 8dad46a431972fcb429bad8c24de20a86b42c0d3 SHA-256: 46724953379b0a98b7241452e6c49611f9332b6054aec8b1694a0d45c831c905
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/award?keyword=osmanl%25C4%25B1+imparatorlu%25C4%259Fu+tarihi+ahmet+cevdet+pa%25C5%259Fa+pdf PDF link annotation
    • http://wunadimizurened.medianewsonline.com/bipolar_1_disorder_dsm_5.pdfIn PDF document text
    • http://vazizasoka.iblogger.org/79773007398.pdfIn PDF document text
    • http://zuviferufudufa.iblogger.org/mukonemajodaromuxul.pdfIn PDF document text
    • https://sekikeke.weebly.com/uploads/1/3/4/7/134739811/vunobizuribejosuwugi.pdfIn PDF document text
    • http://pewujok.mypressonline.com/what_are_the_phonological_processes.pdfIn PDF document text
    • http://tuwasukam.getenjoyment.net/xagomemimo.pdfIn PDF document text
    • https://semuvobe.weebly.com/uploads/1/3/0/9/130969465/punog_jeviwebu_gasexem.pdfIn PDF document text
    • http://toxipoxekej.medianewsonline.com/afnor_iso_9001.pdfIn PDF document text
    • http://fagogit.sportsontheweb.net/conveyor_belt_system_design.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/573c2414-d795-47e2-a25b-58179ac94912/interior_design_app_iphone_free.pdfIn PDF document text
    • http://zusunikumejimet.rf.gd/labozelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b951272c-d61e-4565-9fb3-fd6319d9c58e/food_chain_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/43304869730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5df4a13-ea32-4a15-baea-fffb74396aed/22403977935.pdfIn PDF document text
    • http://nafabumawo.rf.gd/solving_quadratic_equations_by_graphing_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/arris_tg862_manual_spectrum.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/knight_rider_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/spanish_english_dictionary__translator_free_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b85a2fbd-551e-457f-b39d-90d0524e1653/star_trek_stellar_cartography.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/43929690455.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/computer_processor_troubleshooting.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_off0000de30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE30 5992 bytes
SHA-256: f4b0332cd2fd9d91b8bdb58ec1798a96e176defb62a7d34829e8e8abf6e2d388
font_01_sfnt_off0000f1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1ED 12548 bytes
SHA-256: 4133b4049949a22e90dc1d81e34038059d6727e5a0318e4ff558c9bd1f4589cf

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