Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9164ed9f36a415a…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 03:53:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 91850340ec635ad17cff3e425971899e SHA-1: d5df9e5f63cd063d4e67b5ea9cb91557fecb5977 SHA-256: d9164ed9f36a415a092f3017243d159ad45aa7648a34e598d06a173757e6246d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to 'coin-master-free-link-blogspot-game-hack' which is flagged as a game hack lure. This suggests the document's primary purpose is to redirect users to a site that likely hosts malicious content or facilitates further downloads. The ML classifier also strongly indicated maliciousness.

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 http://netcdn.tw/app/406889139/coin-master-free-link-blogspot-game-hack PDF link annotation
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-prsion-life-hacks_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/hack-roblox-one-piece-ocean-voyage_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-roblox-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-hack-the-living-dead-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/robloxcom-robux-and-tix-hack_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/da-hood-speed-hacks-roblox-exploit_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/shinobi-life-roblox-hack-2021-february_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-no-offers-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-flame-gg_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/can-you-take-templates-from-roblox-free_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/hacks-for-roblox-mac-that-works-with-overdrive_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-minecraft-severs_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
stream_002_off0000303e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x303E 23104 bytes
SHA-256: 94919a69036cc310eda1a0b1c11eb88be4229d2a6d11d207fb37b9d28a0cff1a
font_01_sfnt_off00006401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6401 18632 bytes
SHA-256: d0d574b1662071f3403a16b1a6302b8c72ae4679adcfbefd57853cfc863fd1c5