Malicious PDF — malware analysis report

Static analysis result for SHA-256 0692ab6037cb60a3…

MALICIOUS

PDF

64.0 KB Created: 2021-03-18 10:24:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0800daa630e5c7597da72edbaa8a035f SHA-1: df6bf562ad3959dcedcfc9e8b5c37100b274c1fe SHA-256: 0692ab6037cb60a3c9fec7c8b3a930edb246b6014360cff41bf6a09dfd900f6f
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 0.7262

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://midufefew.ru/strik?utm_term=mini+wireless+keyboard+with+touchpad+instruction+manual PDF link annotation
    • http://familyit.pro/587997945819nxha.pdfIn PDF document text
    • http://gogotmif.space/jetaxbiw7v.pdfIn PDF document text
    • https://cdn.sqhk.co/rirakibugo/ijZsgji/knightfall_armor_batman.pdfIn PDF document text
    • http://sakhavto.ru/41688923576hpsz9.pdfIn PDF document text
    • https://cdn.sqhk.co/zeputefilu/2gdi2ib/idle_champions_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/hee6Rj8/89394364505.pdfIn PDF document text
    • http://gelchlen.fun/integral_of_2x_arctan_xfk7c0.pdfIn PDF document text
    • http://copyrightsupport-ig.com/padi_rescue_diver_course_pricew6m4l.pdfIn PDF document text
    • http://rodina38.ru/pure_apk_install_appell5q.pdfIn PDF document text
    • https://cdn.sqhk.co/wemegofuk/Ihgiahb/jixezinufunowes.pdfIn PDF document text
    • http://b0xberry.online/dilomomupp5apb.pdfIn PDF document text
    • https://cdn.sqhk.co/sanojuxako/hECnage/word_crossy_cheats_level_908.pdfIn PDF document text
    • http://opensol.xyz/rheem_gas_hot_water_tank_pricesqlc63.pdfIn PDF document text
    • http://theraisins.pro/freightliner_oasis_service_centersih963.pdfIn PDF document text
    • http://flymoney.net/sri_lakshmi_ashtothram_in_telugusd0go.pdfIn PDF document text
    • http://fionainthefield.org/44066255347ahl5z.pdfIn PDF document text
    • http://repochka.site/canadian_citizenship_checklistj5zrx.pdfIn PDF document text
    • http://xtrading.buzz/452945370733il8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9e1b5e4e-b4ab-405b-8fdf-b3b6d7b19c28.filesusr.com/ugd/94ea38_acf14f12d5824994bb09608c86d694f0.pdf?index=trueIn PDF document text
    • https://c6f55193-7475-4343-97dd-33cb3b141b6a.filesusr.com/ugd/808d8c_992d49aa7752493d8c2eeb28581d9840.pdf?index=trueIn PDF document text
    • https://6363ce23-9394-4102-a476-7be320345719.filesusr.com/ugd/7c41c1_56d0894ccb524c3aaf196d6f3f1e081f.pdf?index=trueIn PDF document text
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_411fefc87afa40c0a7900a392bc1cf60.pdf?index=trueIn PDF document text
    • https://781b76d0-895c-4d4e-90f3-491762fad171.filesusr.com/ugd/894952_6766d699ff4841da820574b22ddc96f2.pdf?index=trueIn 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_off0000f181.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF181 5716 bytes
SHA-256: b23d05905160272b62d242aa8f1add61eed40aa634ff823b230ff83e0c1849f6

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