Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f78830b67a9991…

MALICIOUS

PDF

71.1 KB Created: 2021-03-01 06:29:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: d6ec2c7af113a29d1c597f9dc2cd7c0a SHA-1: 70b3a874ad3fdd030325cae3d7532e6c98d69e58 SHA-256: e0f78830b67a9991aef72c2ce8547690ffd331f7cd3ff49a8a19761dc632f246
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous external links, many pointing to disposable domains, and a heuristic identified it as a link farm designed for SEO manipulation. The presence of a 'download button' lure further suggests an attempt to trick the user into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://soxebez.ru/award?keyword=lights+out+2016+full+movie+download+in+hindi+720p PDF link annotation
    • http://fimewot.xyz/64811255954oucb.pdfIn PDF document text
    • https://teniroge.weebly.com/uploads/1/3/4/6/134693228/podeb.pdfIn PDF document text
    • http://businesslinecenter.com/best_statistics_book_for_machine_learningu886v.pdfIn PDF document text
    • http://bolagafub.iblogger.org/what_is_safe_holding_temperature_for_food.pdfIn PDF document text
    • http://luminar3-download.xyz/leaving_the_body_a_practical_guide_to_astral_projectioncstc0.pdfIn PDF document text
    • http://powogole.iblogger.org/what_is_self-knowledge_with_example.pdfIn PDF document text
    • https://werevofapopaja.weebly.com/uploads/1/3/4/4/134492388/sibem_wivatatijukesed_duputunisigitu_vaxatoz.pdfIn PDF document text
    • https://wawumojobov.weebly.com/uploads/1/3/5/3/135323155/vepogu_zatatuz_rujufarigu_nedeko.pdfIn PDF document text
    • http://javatow.22web.org/free_hourly_calendar_template_2018.pdfIn PDF document text
    • http://astropsychology.website/tigapunibijugex8yafa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojuwuwa.rf.gd/smart_band_watch_price_in_india.pdfIn PDF document text
    • http://meferujapepaz.epizy.com/47944221813.pdfIn PDF document text
    • http://webubekesivamuf.epizy.com/58375637495.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_off0000d7f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F3 6012 bytes
SHA-256: 4cfd7fce063d94b0e9ce13b10c51078ceea539f515ebc77786aa82484569b842
font_01_sfnt_off0000ec7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 10212 bytes
SHA-256: c3885b490e7c05895ae349ea687ee39cbd4bf694f9d8f454a157b04658ce1079

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