Malicious PDF — malware analysis report

Static analysis result for SHA-256 0616ac5799577e50…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 02:40:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fc25db10cf9e8acef069ac0391742806 SHA-1: 2e4a0cb663ed1293b7370000709ec00c33ee8e69 SHA-256: 0616ac5799577e50abc9b58b7b748153c1e774adbb5bf4fa53641aaeacd94c11
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to websites offering game hacks and generators, with a primary redirector identified as malicious. The document body and embedded links suggest a lure for users seeking cheats or in-game currency, which is a common tactic for leading users to malicious sites or potentially downloading further payloads. No scripts were extracted, but the extensive link farm and malicious redirector indicate a high likelihood of user redirection to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/robloxhacks-game-hack In PDF document text
    • http://simon-skov-fougt.dk/billeder/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/hack-download_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-spin-coin-master-hack-2021_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_off00004a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A7A 26096 bytes
SHA-256: 7255911040a0f0226502b6f53c58d2c10d20e494e0ac9beebff98b3d1e043c31
font_01_sfnt_off0000854c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854C 18348 bytes
SHA-256: 4c82b5acf2344fb6074e769b7bb8f458d53ebd76102ce4f277dd7245c06f6447

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