Malicious PDF — malware analysis report

Static analysis result for SHA-256 488cafdd6ba95807…

MALICIOUS

PDF

32.3 KB Created: 2021-06-29 18:40:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0134ccc552d3d98da069ed381df6349b SHA-1: abd8e51a4bf52ac10e7eca57fd25209cf04c99f0 SHA-256: 488cafdd6ba95807256a63490cf04ebf2f15f2ed3d67fc933e77a86fee4b900c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs and a prominent call-to-action lure related to "Roblox Freebies Com Hack". The heuristic firings indicate that the PDF links to a game hack redirector and was flagged as malicious by an ML classifier. The document body, though partially garbled, contains text and URLs suggesting a phishing or scam attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/roblox-freebies-com-hack-game-hack PDF link annotation
    • http://unilin21.ru/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://unilin21.ru/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/roblox-catalog-admin-free_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/gladiator-now-we-are-free-roblox-song-id_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/pastebin-com-for-free-robux_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/roblox-uploader-for-free_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/free-games-just-like-roblox_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/how-to-hack-roblox-accounts-2021-payed_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://unilin21.ru/images/how-to-cheat-in-miner-haven-roblox_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/roblox-pizza-hack_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/free-robux-rbxrewards_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/how-to-get-any-roblox-item-for-free-2021_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/roblox-exe-editor-cheat-engine_GM431946152.pdfIn PDF document text
    • http://unilin21.ru/images/free-spin-link-for-coin-master_GM406889139.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_off000028e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28E1 21852 bytes
SHA-256: 58d8c11a7b8aa2fe5a23362b54e0e0703b56284985811d1ebc402bafdb7601a1
font_01_sfnt_off00005915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5915 19200 bytes
SHA-256: 7c48b7bb5979ffc543fb376a96830404d970fb48f540077abfad15df7b8a6a23

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