Malicious PDF — malware analysis report

Static analysis result for SHA-256 75c8d077324bb576…

MALICIOUS

PDF

68.1 KB Created: 2021-03-19 10:07:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dabcb95bd7e11cda2c0b4b89da8cdada SHA-1: e5421499bec312eee6f41ec1df2a507b0c2e3c85 SHA-256: 75c8d077324bb576a4f3532c114ca4c488c6eac3e671eb565de64cffba6075fa
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, appears to be related to the URL's keyword, suggesting a phishing or malware distribution lure. No scripts were extracted, but the presence of an external URI and the high confidence threat detection indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9576

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://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