Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc70c54fc90c789f…

MALICIOUS

PDF

76.6 KB Created: 2021-04-11 23:35:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: eb37b0a8f83f40069b42eaa79ae69de6 SHA-1: 39b129cce650bbcc843981f2676375c19e91a392 SHA-256: cc70c54fc90c789f906aeecef03dab454833f00cd31b9c405b90ab6ebc43d9c8
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-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://ponafet.ru/strik?utm_term=hisense+75+r7+review PDF link annotation
    • https://cdn.sqhk.co/wubejiwixu/g91wjWh/boss_katana_artist_manual.pdfIn PDF document text
    • http://poxijirubulemax.22web.org/murraya_hedge_planting_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_6014d173dcf7b.pdfIn PDF document text
    • https://cdn.sqhk.co/fagiseregu/ghUPMjj/offroad_car_driving.pdfIn PDF document text
    • http://kufemotobenin.66ghz.com/baripurunujufedi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402717/normal_5fc8c6aac8b79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416150/normal_5fd2f61600df5.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/78908982467.pdfIn PDF document text
    • http://netolenogafa.getenjoyment.net/how_many_calories_in_2_dunkin_munchkins.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/me_before_you_full_movie_with_english_subtitles_free_download.pdfIn PDF document text
    • http://dabukim.mygamesonline.org/ms_excel_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451752/normal_5fd2a7ed83be3.pdfIn PDF document text
    • http://wowogobofomufu.mygamesonline.org/php_7_data_structures_and_algorithms.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464077/normal_5fe24a5b1c493.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/t7hiojJ/last_minute_cruise_deals_from_uk_ports.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9169454a-6e45-4b39-89c4-5cd9bf0a6084.filesusr.com/ugd/32fbc8_a7238df259004f3fb385e49a0c6801ea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dazawojob/riello_oil_burner_wiring_diagram.pdfIn PDF document text
    • http://bepinutarefe.rf.gd/pandas_for_data_science_cheat_sheet.pdfIn PDF document text
    • https://5053e88e-9e18-4719-890c-32a1cca0295d.filesusr.com/ugd/411503_bb959203248a4dd2a802fd1d0bfc3140.pdf?index=trueIn PDF document text
    • https://26f2e344-8444-46ea-90c9-5a893bcc2fb3.filesusr.com/ugd/b8c837_11f4089c8cdd477aac4c3da008a09741.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/what_does_modern_egyptian_writing_look_like.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/gubugiwiwuxosep.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4C 4756 bytes
SHA-256: 2aa75e3140beb37ae3e0587aa2379bb070c5dd072a00e0812d509ae10a4baced
font_01_sfnt_off0000fea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA6 11456 bytes
SHA-256: b9a1c006fee70079ebe519b735eda893b039fc5a5d16b4ecb28f070be31c73b3

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