Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d1b01a0bf267fd…

MALICIOUS

PDF

92.7 KB Created: 2021-03-07 13:49:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d861768ee8fecbc5806ea8f4b93eccb5 SHA-1: 7acb87b99f056026a59dee4bc7be61de3c86e9d4 SHA-256: a3d1b01a0bf267fdd73bd68c78f461c231bd36cd5cdb42e55be0b2b4c2574573
166 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, aiming to trick users with promises of prizes or funds. The presence of numerous external links, including one to 'botokaw.ru', suggests an attempt to redirect users to malicious websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or scam attempt, likely leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://botokaw.ru/strik?utm_term=after+twenty+years+summary+brainly PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480891/normal_5fd9706650136.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478950/normal_60209ad164364.pdfIn PDF document text
    • http://lukovopikad.iblogger.org/jebisi.pdfIn PDF document text
    • http://xovonakajo.22web.org/causes_of_air_pollution_in_mumbai.pdfIn PDF document text
    • https://cdn.sqhk.co/rudugebakivo/wvZ5iap/hip_hop_colouring_book.pdfIn PDF document text
    • https://cdn.sqhk.co/rosisole/Yifvje8/15567352960.pdfIn PDF document text
    • https://cdn.sqhk.co/vigeroti/igcdHha/large_keyboard_for_android.pdfIn PDF document text
    • http://nulozawun.22web.org/jukisokabu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455180/normal_6023fb9d624bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387410/normal_601bd789591ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424682/normal_5fc944a4a0517.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530868/normal_5ffefa4204aa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450251/normal_602d996149be0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457281/normal_6035025d2150c.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/lowuwofuxali/78441960162.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/dovasab.pdfIn PDF document text
    • http://wemiwapava.epizy.com/crinkleroot_s_guide_to_animal_habitats.pdfIn PDF document text
    • http://kunibenurupamiv.rf.gd/xamewivorosutogal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9252a9d-d83e-4ba1-962b-1f25e5c7bca1/how_to_play_munchkin_for_dummies.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/nuvagukineridenikejab.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/28412525014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a668ede-92a9-480e-b46c-eb23cd52d98e/totinezur.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001181c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181C 5236 bytes
SHA-256: ddadaf98e37203ea7115a05187a7039ffc2cc10ea859a6cc244fc96027ee1425
font_01_sfnt_off000129ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129EF 10712 bytes
SHA-256: 00ef605d3a755f259f46351a5a34d1c3674bd73779f016ea966c5c65e8bb4be8
font_02_sfnt_off00014ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EBD 16028 bytes
SHA-256: 0bae8649ba252bcfab81cb8324cfe1737d73e47191b507e117e6d0858e0066a8