Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e10e3bb2507a8f…

MALICIOUS

PDF

40.3 KB Created: 2021-05-02 08:31:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c465cbf931e2a03c5c06cc1638f9e087 SHA-1: 2ae478756cc3b6d21228e7e62b98380190b5b4af SHA-256: 56e10e3bb2507a8ffc2dad982fa02967d903565461315e856a68db713a9ec8f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting a 'free generator / game hack'. The heuristic firings indicate that these links are part of a known malicious redirector chain. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/haxteam-cf-free-robux-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-robux-free-sin-pastebin-2021-con-jugar.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-raindrop-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/fun-flex-roblox-hacks.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-give-yourself-money-roblox-cheat-engine.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/earn-gg-free-robux.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-dino-simulator-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-hack-no-human-verification-2021.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-cookies-hack.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-csgo-skins-hack.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/giveaway-free-robux.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_off00004145.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4145 25036 bytes
SHA-256: 23150178dc8fd5741c33ecc731e759027b69483c76e3ce51a4be626e705015ae
font_01_sfnt_off00007adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADF 18608 bytes
SHA-256: ceb6a4f678e36cac1fe4879ef7d52023eb2ca0a94c29ee8fbe33ba2df4d5b91b