Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ea04765c67fb56…

MALICIOUS

PDF

76.9 KB Created: 2021-02-28 16:55:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fab254650a205aee89c9f8b2811de692 SHA-1: edeb3efe339f6196f60fa0776df87b627403f6f2 SHA-256: 22ea04765c67fb5680b043449656aade6778af99f4fb90a9835d1e8c94b86143
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a phishing site. The document body, though heavily obfuscated, appears to reference a fitness equipment manual, suggesting a lure to trick users into visiting the malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=life+fitness+9500hr+recumbent+bike+manual PDF link annotation
    • http://atomyimperial.ru/crash_1_ps4_trophy_guidei82c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418557/normal_6033826b4b43a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383128/normal_5ff526964f25d.pdfIn PDF document text
    • http://espaceabone.com/what_are_essential_linux_commandsur6kb.pdfIn PDF document text
    • http://detonicro.website/beintehaa_serial_sad_songa3bwr.pdfIn PDF document text
    • http://ingmijn.com/85968116126t0k7f.pdfIn PDF document text
    • http://fusubakitakudup.66ghz.com/detusew.pdfIn PDF document text
    • http://edalovert.xyz/lawn_boy_522r_snowblower_manual9trof.pdfIn PDF document text
    • http://italysummer.fun/report_false_advertising_australiaqvlzp.pdfIn PDF document text
    • http://paworupuwiwitew.iblogger.org/1044970232.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418575/normal_602c05121b475.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465565/normal_5fcf26f9a3d01.pdfIn PDF document text
    • http://ludshop.xyz/vukobz2t74.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xagewojijakeri.rf.gd/incorporated_business_tax_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/tuwoxefofuk.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/28232175097.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/sorivulazufuwakamukuki.pdfIn PDF document text
    • http://waromewozepivo.rf.gd/52039005550.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/3._9_bootloader_iphone_2g.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_off0000ee3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3F 5688 bytes
SHA-256: dcabbd16ce6a384c3f0d9fddfa16141d126210b3d6de98b15da856078a8e18ce
font_01_sfnt_off00010176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10176 10936 bytes
SHA-256: 641dd0f81c1b9954c9bd0b82d580c5e1ec4f2a2dfa658c00d61d040c6c1f89c8

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