Malicious PDF — malware analysis report

Static analysis result for SHA-256 198894d2fe764a23…

MALICIOUS

PDF

58.2 KB Created: 2021-02-19 01:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 652f3747b69fc475313355f37a7b836f SHA-1: 1d5e1988e1b3690995465b4b7d92c1b32768194b SHA-256: 198894d2fe764a23f5f0f46dbec5f4dd28dbced8d6ee721cd23732e0e1f16036
124 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.8255

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://maypoin.ru/strik?utm_term=exide+battery+charger+price PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456999/normal_5ff69537a9a26.pdfIn PDF document text
    • http://jakartapro.xyz/tipeva202ye.pdfIn PDF document text
    • https://cdn.sqhk.co/jefulajidi/jaohcrA/sputnik_v_stock_price.pdfIn PDF document text
    • https://cdn.sqhk.co/guregame/xhd7w3Q/rainbow_dessert_bakery_party.pdfIn PDF document text
    • https://cdn.sqhk.co/bomoxale/Tjdifii/vefuw.pdfIn PDF document text
    • http://technodom11.com/nutritional_information_bacardi_white_rum7hvk1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380857/normal_5fc72a79b05d8.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/tPjh4N7/natural_acrylic_nails_short_coffin.pdfIn PDF document text
    • http://copyrightmediahelp.com/mojivosaviluxidolu9gocj.pdfIn PDF document text
    • http://help-copyrightservice.xyz/8307612473d22d4.pdfIn PDF document text
    • http://clebohets.xyz/atwood_water_heater_gc6aa_10e_replacement_tankw91w8.pdfIn PDF document text
    • http://wrinklestiltskin.com/zujajelamhcnr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kalogoraretupo.epizy.com/plaid_flannel_sheets_queen.pdfIn PDF document text
    • http://mebexadesojixip.rf.gd/33333260553.pdfIn PDF document text
    • http://nodefojabotozij.rf.gd/star_sports_first_live_tv_app.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_off0000d2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C9 5392 bytes
SHA-256: 2986382d5d5af7c896b041537a201cf82ea0f02d192680741eb99a399c2980c5

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