Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb4942897ddc8d2…

MALICIOUS

PDF

43.1 KB Created: 2021-05-17 22:08:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 453411a344f342ffc924a7054a25c7e5 SHA-1: 222264b5fd1d3de172eb2d284dfd461ed67cf776 SHA-256: 5bb4942897ddc8d29c6cc6712fab00a76264804204293be80c32b8480dacbe3c
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 0.9971

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-roblox-premium-game-hack PDF link annotation
    • http://www.peterdejonge.nl/images/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/mc-update_GM479516143.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://www.peterdejonge.nl/images/roblox-arsenal-hack_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
stream_003_off00004910.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4910 25848 bytes
SHA-256: d72053172d6c9196d7652fdac82786b66fb225d31c9c4bd11fbd7aae97452445
font_01_sfnt_off0000855a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855A 18620 bytes
SHA-256: 6b551930cef55f40e6eb23df153e490346d16ddb025fe33a98e4996eaf4f5114

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