Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e178dbeb7fd18b…

MALICIOUS

PDF

39.4 KB Created: 2021-05-21 09:46:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9b65c717f3860a3fc0f3bb91beda5abf SHA-1: f27690b1760813e358320c8b2f707938a0d1644f SHA-256: 29e178dbeb7fd18b04c918ed205db05b193aaf2582a809d01725f09ff702fe06
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/479516143/minecraft-java-edition-free-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/tiktok-free-website_GM835599320.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35DB 25196 bytes
SHA-256: 62f965b671d93b10f0b1f9fc6773eb15a54b6f5c04e9426764a9f425271e1f57
font_01_sfnt_off00006e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E45 3232 bytes
SHA-256: d97306edc2df4a5923967ba23052cbf20787ba7f1e0dc7c2421767fb98b88401
font_02_sfnt_off000078f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F1 18164 bytes
SHA-256: e28d0ded599416f75746d42b4ddd49ac4ed584cd54835945167b34c6d366202b

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