Malicious PDF — malware analysis report

Static analysis result for SHA-256 d317ba7616e83dac…

MALICIOUS

PDF

45.6 KB Created: 2021-05-17 01:34:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e29b4efd96ca1f8ac2f26b2bd771155f SHA-1: 262fa66e6a64317d75db1b3975917c358620a986 SHA-256: d317ba7616e83dac1346c90872103ebe9951f9097e2d580d70dd6085152cb1b2
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 0.9980

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/431946152/free-robux-promo-codes-2021-game-hack PDF link annotation
    • http://www.mostraining.co.za/images/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/minecraft-bedrock-download_GM479516143.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_off00005354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5354 26588 bytes
SHA-256: b91c65b30797d979dd55a62f5c3b51623389bdb616ead61395f02309ef029e63
font_01_sfnt_off00008e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E24 19004 bytes
SHA-256: 2ae4233163b81a205a597c97f5f9bceef85a21038461a0399da8d1b6d9f39b0a

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