Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd8e4e1411a14e8…

MALICIOUS

PDF

82.0 KB Created: 2021-03-30 15:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ef5732560e98885af917983522fffbc0 SHA-1: 698fca7fc624e84930c5c87574d067e097d103a6 SHA-256: 4fd8e4e1411a14e8d2f06350436c385ad96ad6b858376fd13cc242e459fddd56
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/wix?keyword=things+that+start+with+g+for+kindergarten PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366980/normal_5ffb15ee2b50b.pdfIn PDF document text
    • http://delaem-sami.online/34812055835q7dq8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488116/normal_6012ba0b3bd8f.pdfIn PDF document text
    • https://cdn.sqhk.co/notigagamu/cii7Pgj/citrobacter_freundii_uti_treatment_guidelines.pdfIn PDF document text
    • http://icub.tech/liwinires7patk.pdfIn PDF document text
    • https://cdn.sqhk.co/sizafutito/j15CWhe/goat_simulator_spaceship_controls_xbox_one.pdfIn PDF document text
    • https://ziralupaw.weebly.com/uploads/1/3/1/3/131379221/rebepugofuzazulifumu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401982/normal_600ac90695b8d.pdfIn PDF document text
    • https://nakaporona.weebly.com/uploads/1/3/1/4/131438848/41d410b6.pdfIn PDF document text
    • http://dressnbuy.com/93862689559nmlc3.pdfIn PDF document text
    • http://cosmicgig.com/141000548951p8a8.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/jVfidsB/stunt_truck_jumping_hack_apk_download.pdfIn PDF document text
    • http://my-favshopd.online/stock_market_open_monday_martin_luther_king_days7d3a.pdfIn PDF document text
    • http://huaweistoreukr.xyz/vazobasikapefikaze2p0.pdfIn PDF document text
    • https://cdn.sqhk.co/ramawuvade/jcgdhd0/all_in_one_hp_printer.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/gf6giLe/vukopinaxokofomigijeseme.pdfIn PDF document text
    • https://jibukosixej.weebly.com/uploads/1/3/4/0/134018053/razuxevobe-xexaj-wobufuzixuna-sadugimuxinux.pdfIn PDF document text
    • http://praktika-ingenieur.com/3707269073374f3t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/63654159547.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/34294532029.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/mikiseboriveta.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/best_oral_b_1000_replacement_heads.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/61487047399.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_off000102a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A6 5240 bytes
SHA-256: 721f895f8d904be2d83ba97efc1c7df81444ea6dc1e391598229d97f40d4b099
font_01_sfnt_off0001148b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1148B 11224 bytes
SHA-256: 95f78f5e61205418ac006ef371548261155d402bb19f4b016f1b63fbe437befb

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