Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d14e24237e25be…

MALICIOUS

PDF

85.0 KB Created: 2021-03-26 11:49:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 498a2dcc95b6463350353c54f1173c13 SHA-1: acddb400270139002c8c0660de7a25109d82074e SHA-256: f3d14e24237e25becffddaa287fbae0d5509d0b2d6f3e975887777d7bf36c99b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains or link farms, suggesting a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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
  • 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://golowaki.ru/123?utm_term=inventor+cad+parts PDF link annotation
    • https://cdn.sqhk.co/jesisuvov/xhdhbxi/messenger_lite_login_apk.pdfIn PDF document text
    • http://reform-st.ru/alcatel_lucent_ip_touch_4029_manual_portuguesqlwb9.pdfIn PDF document text
    • http://zuvalasit.mypressonline.com/circuit_training_workout_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/dujuxafetot/6WiRgdX/critical_care_doctor_meaning.pdfIn PDF document text
    • http://fumatiw.mypressonline.com/zirumujijexuresajuki.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/95722711448.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/jhuhhjg/zefegixoxaxafegorif.pdfIn PDF document text
    • http://gaydating.world/wewuzadon6zgqx.pdfIn PDF document text
    • http://bathforlegs.xyz/r_programming_jobs_for_freshers_in_chennai1m98p.pdfIn PDF document text
    • http://help-mediasupport.com/diridijuwidivexuvokixokuc86u9.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/sms_blocker_option_premium_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xolovagi/jfggNd1/fox_news_ratings_2020.pdfIn PDF document text
    • http://lnstagram-helping.live/dragon_s_dogma_dark_arisen_strategy_guidesr5ik.pdfIn PDF document text
    • http://rkconstructionsucks.com/basic_civil_engineering_book_free8xs41.pdfIn PDF document text
    • http://azorocheat1.xyz/bukawimobogigotiral648z.pdfIn PDF document text
    • http://uose.xyz/free_living_will_template_georgiad0lql.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/signs_and_symptoms_of_hearing_impairment.pdfIn PDF document text
    • http://verifiedbadges-form.com/pijojusof99o4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_19f33c3f52fb41bdb8cd24aee18e46fb.pdf?index=trueIn PDF document text
    • https://fac7854b-22c3-40b9-bef9-ee94a55a010d.filesusr.com/ugd/fba82c_10748ce4952a442b87708da133925d21.pdf?index=trueIn PDF document text
    • http://gulagopafed.onlinewebshop.net/fekelukuzivat.pdfIn PDF document text
    • https://c0771fee-1ba5-4dbf-bba5-a775c3d44c03.filesusr.com/ugd/544e7e_4eb788a3af8d439b843c93e67313c2d6.pdf?index=trueIn 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10000 4032 bytes
SHA-256: 97c2b2e40c1385b4481fda1c9b3ae017bab0cd090847a61954886acf943b7a13
font_01_sfnt_off00010e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E71 5032 bytes
SHA-256: f0dfdaf75c0272a984aaf9b891c34108f58f7e3ab17fd7296d30958af204eb2f
font_02_sfnt_off00011fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FA2 11664 bytes
SHA-256: 827cf32955e5306577e8cecb05d228e31b4021332fdf93a27bac7ffe0ed999fc