Malicious PDF — malware analysis report

Static analysis result for SHA-256 a35df11f496d2da9…

MALICIOUS

PDF

32.8 KB Created: 2021-07-20 15:30:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: f28369ddd509650c3dea370736bac4a8 SHA-1: 228f5d0aec856a69695156d8c0fa4f01a7fce388 SHA-256: a35df11f496d2da90e37cfaed68178d179de5eb4fd0825fe4198c355c9fa3690
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 0.9900

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 http://netcdn.tw/app/479516143/minecraft-pocket-edition-free-download-game-hack PDF link annotation
    • http://pizzeria-rosso.pl/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://pizzeria-rosso.pl/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA7 21400 bytes
SHA-256: 28a49c448d08325275cf64135958666fb54deb3c542c5cf65ba853726cd144ef
font_01_sfnt_off00005d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D25 18616 bytes
SHA-256: 74c3d0dac38db02fae044005a19145e6493ffdefda41676fc7dac63f0b05f007

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