Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ebd5e1ef1dc6edb…

MALICIOUS

PDF

66.6 KB Created: 2021-05-31 20:58:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0de233143561720d1a566919bd712bc SHA-1: 3be228e4e5d994189167f3ba054e7cc05892e305 SHA-256: 0ebd5e1ef1dc6edba06f97b2be10a17cde6c1570596a0b02a1c65f06fcfeda7b
184 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The primary URL, https://chcial.ru/pbw?utm_term=the+kissing+booth+2+full+movie+123netflix, is presented as a search result for a movie, a common lure. The ClamAV detection and ML classifier further indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8523

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://chcial.ru/pbw?utm_term=the+kissing+booth+2+full+movie+123netflix
    • https://sukorason.weebly.com/uploads/1/3/4/5/134578332/8b51c8f0a39f.pdf
    • https://xuxefaposil.weebly.com/uploads/1/3/4/3/134393683/6338851.pdf
    • https://xoxujodega.weebly.com/uploads/1/3/4/3/134363828/4222108.pdf
    • https://befadileniralan.weebly.com/uploads/1/3/6/0/136082268/dd192ab1.pdf
    • https://vamexerop.weebly.com/uploads/1/3/6/0/136085595/pilabupir_gifexekisizomo.pdf
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/wobipaviligosomipive.pdf
    • https://bigasena.weebly.com/uploads/1/3/4/7/134725946/gavagol-nagipuzagona-fosodamik-limoteronovakiv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jozeluwofe.pbworks.com/w/file/fetch/144418794/47384843693.pdf
    • http://jesababa.pbworks.com/f/2246436146.pdf
    • https://uploads.strikinglycdn.com/files/9acc947b-6fcf-4790-9d2f-c10655eef424/3_1_4_pulgadas_cuantos_centimetros_son.pdf
    • http://mefijunov.pbworks.com/f/60929617948.pdf
    • http://wamotarirup.pbworks.com/w/file/fetch/144422910/ingenico_ict220_250_manual.pdf
    • http://marutipug.pbworks.com/f/hulu_free_trial_hbo_max.pdf
    • https://uploads.strikinglycdn.com/files/2abb7ec5-1915-4604-a22b-304e442092d2/rowefad.pdf
    • http://dekokos.pbworks.com/w/file/fetch/144418221/xavej.pdf
    • http://neruwuk.pbworks.com/f/printable_calendar_2021_may_through_august.pdf
    • http://wuxikadafi.pbworks.com/f/33619255508.pdf
    • http://tazijebep.pbworks.com/w/file/fetch/144419616/21294455551.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db43.bin
62b48b9d8e64f21af90cafe435e0cba38ac502ca2ee1dca9810681f6ef62b0e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB43 5504 bytes