Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae9cdb4b939d6688…

MALICIOUS

PDF

72.0 KB Created: 2021-03-23 17:22:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7bd8bf1def2d857742b2ebd8cf4a2a9 SHA-1: b676f9692cd1653bccea419a7488e787d0734474 SHA-256: ae9cdb4b939d66886f8674b542db7d7cf7f87efdd8bbb9ac585af8698576965d
94 Risk Score

Malware Insights

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

The file is a PDF containing obfuscated content and an embedded URI pointing to a suspicious domain. ClamAV and ML classifiers flagged it as malicious, specifically identifying it as a phishing trojan. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for further infection or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8212

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/award?keyword=enfermedad+por+deficiencia+de+vitamina+k+pdf
    • https://static.s123-cdn-static.com/uploads/4421042/normal_5fff77258c673.pdf
    • http://fakixigulidol.mywebcommunity.org/80355900718.pdf
    • http://bibuzikufaje.mygamesonline.org/citizen_eco_drive_calibre_8700_setting_instructions.pdf
    • http://wativeb.mypressonline.com/agudas_llanas_y_esdrjulas_ejemplos.pdf
    • http://heartcenteredequestrian.com/can_could_be_allowed_to_exercisesm1x1u.pdf
    • https://static.s123-cdn-static.com/uploads/4379601/normal_5ff47550085cc.pdf
    • http://xeboxemovev.66ghz.com/lejedi.pdf
    • http://hytri.com/2967454921858g38.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gorajikunobixi/xopexon.pdf
    • https://s3.amazonaws.com/wobuzisibal/wisodogi.pdf
    • http://zexubadisaki.rf.gd/zutowazesax.pdf
    • http://pakafadudu.epizy.com/avast_antivirus_free_latest_version_filehippo.pdf
    • https://011f98f8-b45f-4578-a2fd-466b530f7845.filesusr.com/ugd/74e905_e0f5bb690aac48e3a4a6fb8b2b520942.pdf?index=true
    • https://f2f8a3c9-3ea7-4a25-b7e2-3e2749f32899.filesusr.com/ugd/f0e51d_e09f1a280a344f6e8503ce1a2db38413.pdf?index=true
    • http://mosazozude.epizy.com/sample_closing_costs_sheet.pdf
    • https://s3.amazonaws.com/fuwuzerijofa/xajijakakujon.pdf
    • https://s3.amazonaws.com/bopuxosavubare/42279678711.pdf
    • https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_0416240e08e743a8afc08dfa48876992.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb6c.bin
7450bba87536325ef64d667cc5f1c65fede9aa72aed4b6ae2458a64654b27156		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6C 5172 bytes

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