Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e1ff8008e3a40e…

MALICIOUS

PDF

46.4 KB Created: 2021-05-16 12:03:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1b24debfbab655368c1d9e26ec02896f SHA-1: 1c4a3302b06635abeb9aac00de74468bf9c76681 SHA-256: d8e1ff8008e3a40e9eb7002e74a57382b48d2352f3cc185c4e8e9351db9d562c
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 0.8948

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/406889139/coin-master-free-spins-2021-ios-game-hack PDF link annotation
    • http://interpretation-dessins-enfants.net/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://interpretation-dessins-enfants.net/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.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_003_off000047b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47B8 27768 bytes
SHA-256: 456e5a6dc26e42a8e5827045d8555a75eeb76e58f9f72bd4228b9aa73c22293e
font_01_sfnt_off000087c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C2 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off000092c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C6 18288 bytes
SHA-256: 09aa2f2ae7c5a995dc44b8644eea5b06d8fda2724c1331629896e56f28692ab2

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