Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6e073578585639…

MALICIOUS

PDF

127.9 KB Created: 2021-04-26 23:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bba172191bfd85bb71a4a61a7fe3f762 SHA-1: 7f979d6c25201720f2abdd66a1304e1231170cd9 SHA-256: 6d6e073578585639d063b8553863a3c9afba2ee7283c47c09804ef7c31f874d5
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it uses a social engineering lure, presenting itself as a 'D-link dir-615 setup manual' to trick the user into installing a browser extension or update. The embedded URL `https://jacksth.ru/strik?utm_term=d-link+dir-615+setup+manual` is likely part of this lure.

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://jacksth.ru/strik?utm_term=d-link+dir-615+setup+manual
    • https://static.s123-cdn-static.com/uploads/4421213/normal_5ffd621485f97.pdf
    • http://raguvigawak.mypressonline.com/80293016110.pdf
    • http://seamanygau.best/cheque_receipt_voucher_template_exceln4oxo.pdf
    • https://cdn.sqhk.co/xovinexesun/Xhet0ha/59511892907.pdf
    • https://cdn.sqhk.co/wedegetuso/heHMifu/48042023188.pdf
    • http://gravkamen.ru/ruwurerf3bd3.pdf
    • http://vomimaforotagi.mywebcommunity.org/principles_of_musical_acoustics.pdf
    • http://gunenekaroz.mypressonline.com/codices_mixtecos.pdf
    • http://zumufufup.sportsontheweb.net/numerical_and_statistical_methods_for_civil_engineering.pdf
    • https://cdn.sqhk.co/fetedudi/iYhfuwf/bakaxunod.pdf
    • http://konalofasu.mywebcommunity.org/maynard_ferguson_birdland.pdf
    • http://sodalabs.club/who_invented_the_filament_light_bulb0rv9x.pdf
    • http://fudoviwil.mywebcommunity.org/jeruzi.pdf
    • http://vugekowuzujed.scienceontheweb.net/sound_search_for_google_play_ios.pdf
    • https://cdn-cms.f-static.net/uploads/4380527/normal_605564baabbc1.pdf
    • http://atomyimperial.ru/crash_1_ps4_trophy_guidei82c3.pdf
    • https://cdn.sqhk.co/bisozowinala/gjdQGm1/zopamokazuloba.pdf
    • https://cdn.sqhk.co/petebeki/jfNgcji/within_the_ruins_black_heart.pdf
    • http://italysummer.fun/no_crop_photo_instagram_apk814p2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zidosozawok/adobe_photoshop_fix_apk.pdf
    • https://s3.amazonaws.com/bejeseja/lenovo_iomega_ix4-300d_manual.pdf
    • https://s3.amazonaws.com/jozetej/50818989561.pdf
    • https://s3.amazonaws.com/rutufokedizon/jijuvakinufuno.pdf
    • https://s3.amazonaws.com/wujafivabipo/wematewafapujanavino.pdf
    • http://redifigikutusoj.myartsonline.com/callidus_commissions.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b47d.bin
e951719178ec02164b4413db88debb9b10d732ed3a6dbf82b97bf922e9695af9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B47D 5532 bytes
font_01_sfnt_off0001c742.bin
dd14919533821b9ce4ca2562d7eec4ac5b5f6239fabbc43f5336358c277a416d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C742 11992 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.