Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ab98074260cda10…

MALICIOUS

PDF

70.9 KB Created: 2021-03-06 23:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 587962628006cbbc2fbb4a90156e97f2 SHA-1: abe33e0413a8ada1177530a73790cd59abe77fca SHA-256: 4ab98074260cda10113044c6fd3de8324c58fb853836087ac1d4745b482c6d44
124 Risk Score

Malware Insights

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

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 0.8294

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
  • 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://bologen.ru/award?keyword=what+is+the+best+bread+making+machine+to+buy PDF link annotation
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/2319784.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476122/normal_5fefb9472fa3c.pdfIn PDF document text
    • http://topuniversityru.fun/xaderexunmx8ij.pdfIn PDF document text
    • https://nasinapalu.weebly.com/uploads/1/3/0/7/130739684/bixofoma-fozurileserepe-gakifedadiwajeb.pdfIn PDF document text
    • https://vigodabazo.weebly.com/uploads/1/3/4/8/134872933/semujiwizopab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450250/normal_5fd10221284fc.pdfIn PDF document text
    • http://sanatoriy-izumrudny.ru/20_public_speaking_tips_for_studentsbo8zf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502906/normal_60059e45d230f.pdfIn PDF document text
    • https://feronokemafa.weebly.com/uploads/1/3/1/1/131164109/5032998.pdfIn PDF document text
    • http://pumorux.medianewsonline.com/xbox_one_controller_pc_wireless_adapter_amazon.pdfIn PDF document text
    • https://nixunirebexif.weebly.com/uploads/1/3/0/7/130776125/165384.pdfIn PDF document text
    • http://stat-index-co.com/free_movie_maker_programs_for_windows_10v950o.pdfIn PDF document text
    • http://jilavixit.medianewsonline.com/27997635368.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/tozaduliwubega/bakojuzeramok.pdfIn PDF document text
    • http://vunonam.atwebpages.com/duwijoda.pdfIn PDF document text
    • http://zegetafirotazaz.atwebpages.com/22396160987.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/social_media_calendar_template_google_sheets.pdfIn PDF document text
    • http://positajugopisu.myartsonline.com/introduction_to_analysis_rosenlicht.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/2534111318.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/c_s_p_ka_full_form_police.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BC 5640 bytes
SHA-256: 801fe95c98bbce7a3a5565b0d952fc9646c96f756b58c700c22fb49b8663d90b