Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f49559496487611…

MALICIOUS

PDF

38.2 KB Created: 2021-05-23 10:54:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 59e2aa6afaf79b8245d5b4cb744238df SHA-1: 842864418c563a5d130c01417233c807c9762dcd SHA-256: 1f495594964876113f7c30327247654808f006f255c7561fb28e9fecb4060cab
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game hacks and generators. The document body and embedded links suggest a phishing attempt to redirect users to potentially malicious websites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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/479516143/free-minecraft-survival-server-game-hack In PDF document text
    • https://www.milewood.co.uk/images/100-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://www.milewood.co.uk/images/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.milewood.co.uk/images/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • https://www.milewood.co.uk/images/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://www.milewood.co.uk/images/how-to-get-free-robux-in-adopt-me_GM431946152.pdfIn PDF document text
    • https://playhack.in/minecraftIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000329e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x329E 24996 bytes
SHA-256: 32414311f8fee831662d2d30b953e14f524dd4009ead92a8df8b1c2ca855eb9f
font_01_sfnt_off00006b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B29 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off000074d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D0 17896 bytes
SHA-256: a416ee995e2fcdad104e8f08570a8c057a7877f0093c65a8eab662d227b30cb8

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