Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff04daae5ed51bd7…

MALICIOUS

PDF

79.1 KB Created: 2021-04-30 15:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1ebbdeb612b97f7f7ef3bb295b5ff62f SHA-1: 5a299ccce5241b5d93024cabb34b49463de8cdb8 SHA-256: ff04daae5ed51bd7a8ecde4208c568345085d331114d1d8c98f8c197024d5633
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 0.9997

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://midufefew.ru/strik?utm_term=twilight+saga+full+movie+watch+online+with+english+subtitles PDF link annotation
    • https://cdn.sqhk.co/letarezetap/BgfBgji/jidetur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459328/normal_6038630fd5efd.pdfIn PDF document text
    • https://tibaxefuxi.weebly.com/uploads/1/3/4/0/134017075/81ed44dac.pdfIn PDF document text
    • https://cdn.sqhk.co/nigigeje/gNvLbTn/voxetoxifupifaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/ieCighK/tusatuzoseka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454821/normal_5fff5ab824fc4.pdfIn PDF document text
    • https://jimiduwukav.weebly.com/uploads/1/3/1/4/131452794/jawinapidexe_kinobidadom_lawoxivowaxis_xukoluziximu.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/j7clKge/49994175650.pdfIn PDF document text
    • https://boriduleloson.weebly.com/uploads/1/3/4/0/134012687/1859aa7f785c3ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403817/normal_60642a114d8d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450356/normal_605f78d37997c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457005/normal_5ffb4a0811e0c.pdfIn PDF document text
    • https://jagobedumaniso.weebly.com/uploads/1/3/0/8/130873939/tosisugu.pdfIn PDF document text
    • https://dituwugo.weebly.com/uploads/1/3/4/2/134235792/vifajadelom-tudebemu-dijopimoda.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/wukara/quote_worksheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/jutosorazivejonaj.pdfIn PDF document text
    • http://wufajin.rf.gd/60899521534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf8bda74-1e1f-407c-a321-7618d8ba6837/72710471174.pdfIn PDF document text
    • http://xatofuli.rf.gd/92657689530.pdfIn PDF document text
    • http://xolijuvusuv.epizy.com/45747361092.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f8ce00b-ea7e-4c93-bc75-c97ba1e9eec1/gafejisomutorup.pdfIn PDF document text
    • http://doxixitoxuneb.epizy.com/4617974368.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_off0000f77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77D 5440 bytes
SHA-256: 1717c3ca6b4abeceb49d7a7344844516560a696b76a4aee3d7f06d7ccf9ccabe
font_01_sfnt_off000109ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109FF 10636 bytes
SHA-256: ee5d0a2ec696f99e8412a3d338c3915119c46e2fc4bae01b335bebae7844f987

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