Malicious PDF — malware analysis report

Static analysis result for SHA-256 1694232655a8ed92…

MALICIOUS

PDF

82.7 KB Created: 2021-03-19 09:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: efd13e8d827a2a4da35653966096d9fc SHA-1: 560dfb4eea6fc2b2e526efdb9dcb03ff6b2c5ec7 SHA-256: 1694232655a8ed925373a477d0547899a39c4620b365efb9f215ec56a89d794e
126 Risk Score

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 0.9997

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://seumenha.ru/wix?keyword=cummins+6bt+5.9+service+manual+free+download PDF link annotation
    • http://pekibexuvipeve.scienceontheweb.net/how_to_clean_rice_cooker_lid.pdfIn PDF document text
    • http://rufamegepijuwo.22web.org/bookshelves_plans.pdfIn PDF document text
    • https://cdn.sqhk.co/kawaxixe/njejigf/championship_manager_free_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/gegojagakexu/i0hhjeu/structuurjunkie_business_planner_2021.pdfIn PDF document text
    • https://cdn.sqhk.co/desixurate/iihhTLC/bandpass_box_for_2_10s.pdfIn PDF document text
    • https://cdn.sqhk.co/gixegusu/Owuhbgg/mirukazaloxasadorive.pdfIn PDF document text
    • http://rosovutuwonemis.iblogger.org/61185881091.pdfIn PDF document text
    • https://cdn.sqhk.co/goxepijikun/1kOURhb/62481903279.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/acrobat_x_standard_edit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kagabefusexem.epizy.com/16282490392.pdfIn PDF document text
    • http://xikufozumif.epizy.com/61393219270.pdfIn PDF document text
    • http://mifojizu.myartsonline.com/how_to_season_char_broil_grill_grates.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/gathered_cafe_footscray_broadsheet.pdfIn PDF document text
    • http://kamaxunavag.epizy.com/gestalt_theory_of_perception.pdfIn PDF document text
    • http://ziresam.rf.gd/wigominodegeruraxelikafeb.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/nadalamotegikodinanatupej.pdfIn PDF document text
    • http://setetutimuwux.epizy.com/gaguvepotezevopow.pdfIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_719fc35db2864dcbb21c4411d837119b.pdf?index=trueIn PDF document text
    • https://8e0cabef-d481-4215-b437-8a5fc4e4723c.filesusr.com/ugd/f41140_a4936368a35f4f53be4d3cbbda6f4f59.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/filidabut/xufadefidofenufopeju.pdfIn PDF document text
    • https://c931c956-7f53-4e4e-96dc-27d7f003ba63.filesusr.com/ugd/b80c10_2cbfeaead6d44da0befd530683f04939.pdf?index=trueIn 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_off00010249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10249 5832 bytes
SHA-256: 347a4e4023c903170430d7f430987ed1db981dd852ece59d25dcfb926b1d98e2
font_01_sfnt_off00011623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11623 11532 bytes
SHA-256: bb494d82c72c7eedb01690a6a11d39b941f7d0197ba570a1f7fd88d523f204be

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