Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82404eec76ff435…

MALICIOUS

PDF

71.6 KB Created: 2021-03-19 10:07:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dded3cb5350aeabf21a058d5c2b9e555 SHA-1: 78507dd82a4ded4374205988feebf925008f3fd4 SHA-256: e82404eec76ff435b9c0d4af58e486e3ccb37a16c266067a52f24122bd27d9f6
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL designed to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of the external URI points to a social engineering attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/award?keyword=reglage+carburateur+voiture+pdf
    • https://cdn.sqhk.co/fobonelaga/2icFOhi/zunome.pdf
    • http://ruwegekugite.22web.org/53124608674.pdf
    • https://static.s123-cdn-static.com/uploads/4393925/normal_5ff1758a64027.pdf
    • https://cdn-cms.f-static.net/uploads/4471455/normal_6027e5e577dda.pdf
    • http://gakebapenabe.iblogger.org/cisco_linksys_e4200.pdf
    • https://cdn.sqhk.co/vasibejovej/gjbqig4/negin_vand_eye_color.pdf
    • https://cdn.sqhk.co/givefugonuw/jgicier/fuwerarukuluponunominor.pdf
    • https://cdn.sqhk.co/pojukitogex/ieWie6E/fox_wallpaper_iphone_7_4k.pdf
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/6777668.pdf
    • https://xiwapidijiz.weebly.com/uploads/1/3/4/5/134511693/kodulupewowu-bijajufil-peluwuzonod-pukenavusizekum.pdf
    • http://najefot.22web.org/tenuka.pdf
    • http://kuxixel.iblogger.org/snow_white_grimm_brothers.pdf
    • http://kegolij.iblogger.org/automatic_control_systems_include_what_three_things.pdf
    • https://cdn-cms.f-static.net/uploads/4420240/normal_604cbf41d9694.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kiluwemu.rf.gd/bose_quietcomfort_35_manual.pdf
    • https://s3.amazonaws.com/xakajoziwibi/did_ahsoka_tano_die.pdf
    • http://fogevodazeta.epizy.com/resoxi.pdf
    • https://s3.amazonaws.com/wazotojemov/83160940360.pdf
    • https://s3.amazonaws.com/damerirazib/45549842790.pdf
    • https://s3.amazonaws.com/jenagubadopi/how_do_i_start_my_water_softener_regeneration.pdf
    • http://minazefawubiso.epizy.com/talirukozidonojesinezeju.pdf
    • http://judedinem.epizy.com/pancreas_endocrino_ou_exocrino.pdf
    • http://solukirakologi.epizy.com/anhaltende_somatoforme_schmerzstrung_f45._4.pdf
    • https://s3.amazonaws.com/dozuga/96085095141.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_off0000d688.bin
5b6d0b2c6f883c1fdf00fb1110855cabd972c05c53ff15dffd79813052823e2c
pdf-font-stream PDF embedded font (sfnt) at offset 0xD688 5352 bytes
font_01_sfnt_off0000e8d9.bin
15a8889b42c23e641be1410d0f0c369868e2095e31929a5bcff503e0dd508877
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D9 12112 bytes