Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f0b5e55158927ce…

MALICIOUS

PDF

32.5 KB Created: 2021-07-19 08:20:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5dfb7ed7964d01a73d11b5fdcd12f21c SHA-1: 3b853fe0fc176dd344eecf65eac25c3fbc88bdf9 SHA-256: 7f0b5e55158927ceb66190fd77bf13988786073a73bbe819045224ae611c034a
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to redirectors and potentially malicious content, masquerading as "free generator" or "game hack" lures. The presence of a "download button" heuristic further supports the deceptive nature of the document. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect the user to malicious websites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/406889139/free-spins-on-coin-master-game-hack In PDF document text
    • http://plastic-surgery.pl/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://plastic-surgery.pl/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://plastic-surgery.pl/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://plastic-surgery.pl/images/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://plastic-surgery.pl/images/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://plastic-surgery.pl/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://plastic-surgery.pl/images/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://plastic-surgery.pl/images/free-roblox-accounts-with-robux_GM431946152.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_off000029bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29BD 23336 bytes
SHA-256: 6919e36b59791b56db0fd6e192f8a7033cbbf54a612a2a3e5ea9f6da0859638b
font_01_sfnt_off00005e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5A 17884 bytes
SHA-256: addbd5428a422ca7211e94293fed3a4f98c85d5f6337328d4d3623e90d90c649