Malicious PDF — malware analysis report

Static analysis result for SHA-256 b961c7e6c31a47a7…

MALICIOUS

PDF

81.9 KB Created: 2021-03-01 11:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8956d6d29325b38b30ea42f638c0aa69 SHA-1: 63d899d73f09f17c1d5e8c630884a712fda352b5 SHA-256: b961c7e6c31a47a7c79a1e52771b3164ed737c4534e3e315157f2ec3d9d103ba
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'botokaw.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI are strong indicators of a malicious document, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://botokaw.ru/strik?utm_term=powermax+45xp+vs+65 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486359/normal_5fcef699bc897.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482018/normal_60097b40e66a6.pdfIn PDF document text
    • http://jurojegame.getenjoyment.net/how_to_check_tcp_ip_stack.pdfIn PDF document text
    • http://vevolim.iblogger.org/paypal_application_form.pdfIn PDF document text
    • https://cdn.sqhk.co/sesijisova/hfhaAgj/my_talking_tom_2_application_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451355/normal_6025309b9770e.pdfIn PDF document text
    • https://cdn.sqhk.co/jevipugirofi/yhcxibj/real_police_siren_mp3_ringtone_download.pdfIn PDF document text
    • http://xiwefugu.iblogger.org/58634008478.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491169/normal_5feb6f0b4c055.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/why_does_my_kitchenaid_dishwasher_not_drain.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/h0idheX/cross_stitch_pattern_generator_software.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428062/normal_60208863bb5d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485442/normal_5fc7d3a195bc5.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/XqFNQ8N/galaxy_attack_alien_shooter_tips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477892/normal_601f72eff1cf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496818/normal_601b2dcf5d470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449783/normal_602ecfd6dae0e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dolipunifaz.epizy.com/duxono.pdfIn PDF document text
    • http://jizagedades.rf.gd/43372414538.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_off0000fa10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA10 5520 bytes
SHA-256: d165aff7298fa33a39cd443f06caa6862c59b21ca5cce63d4e0add98bbe388de
font_01_sfnt_off00010ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE2 15972 bytes
SHA-256: cc67f98da47de4a0747e81ad17b68aeb56869be12c300cc0b0835a41521ab641

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