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)
MD5: 498a2dcc95b6463350353c54f1173c13 SHA-1: acddb400270139002c8c0660de7a25109d82074e SHA-256: f3d14e24237e25becffddaa287fbae0d5509d0b2d6f3e975887777d7bf36c99b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'golowaki.ru', which is likely used to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting a compromised or malicious domain, potentially for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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
    • https://cdn.sqhk.co/jesisuvov/xhdhbxi/messenger_lite_login_apk.pdf
    • http://reform-st.ru/alcatel_lucent_ip_touch_4029_manual_portuguesqlwb9.pdf
    • http://zuvalasit.mypressonline.com/circuit_training_workout_for_beginners.pdf
    • https://cdn.sqhk.co/dujuxafetot/6WiRgdX/critical_care_doctor_meaning.pdf
    • http://fumatiw.mypressonline.com/zirumujijexuresajuki.pdf
    • http://gosoxegekiri.mywebcommunity.org/95722711448.pdf
    • https://cdn.sqhk.co/tozegatopaxu/jhuhhjg/zefegixoxaxafegorif.pdf
    • http://gaydating.world/wewuzadon6zgqx.pdf
    • http://bathforlegs.xyz/r_programming_jobs_for_freshers_in_chennai1m98p.pdf
    • http://help-mediasupport.com/diridijuwidivexuvokixokuc86u9.pdf
    • https://cdn.sqhk.co/xolovagi/jfggNd1/fox_news_ratings_2020.pdf
    • http://lnstagram-helping.live/dragon_s_dogma_dark_arisen_strategy_guidesr5ik.pdf
    • http://rkconstructionsucks.com/basic_civil_engineering_book_free8xs41.pdf
    • http://azorocheat1.xyz/bukawimobogigotiral648z.pdf
    • http://uose.xyz/free_living_will_template_georgiad0lql.pdf
    • http://verifiedbadges-form.com/pijojusof99o4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_19f33c3f52fb41bdb8cd24aee18e46fb.pdf?index=true
    • https://fac7854b-22c3-40b9-bef9-ee94a55a010d.filesusr.com/ugd/fba82c_10748ce4952a442b87708da133925d21.pdf?index=true
    • https://s3.amazonaws.com/lurutopobi/sms_blocker_option_premium_apk.pdf
    • http://gulagopafed.onlinewebshop.net/fekelukuzivat.pdf
    • https://c0771fee-1ba5-4dbf-bba5-a775c3d44c03.filesusr.com/ugd/544e7e_4eb788a3af8d439b843c93e67313c2d6.pdf?index=true
    • https://s3.amazonaws.com/bokexizometun/signs_and_symptoms_of_hearing_impairment.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

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

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