Malicious PDF — malware analysis report

Static analysis result for SHA-256 2906456ca0199886…

MALICIOUS

PDF

41.9 KB Created: 2021-05-17 22:12:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7984c9fda7d7c86030928d7ef670fec6 SHA-1: ab41196d86f1d52aebe5b17e562753eff941a73d SHA-256: 2906456ca01998861b60e1fa839a3a7e1ffbacb7be7b844f913d86161ac17b41
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/roblox-rape-hack-game-hack PDF link annotation
    • https://allhimalayantreks.com/userfiles/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • https://allhimalayantreks.com/userfiles/files/how-to-hack-in-arsenal_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_off00004969.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4969 24344 bytes
SHA-256: 1b1d3675daf7b2433f1a069fd8ade539f99eae8b6151b6b2c6a786bb8196674f
font_01_sfnt_off000080fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FE 18356 bytes
SHA-256: 8a1fe0c7231104fca4fa627868bae52978e90e92fc8d209bfe3611444447d27b

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