Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e6c8bd8359b322…

MALICIOUS

PDF

36.4 KB Created: 2021-05-22 22:04:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 822588df92de0ca17f50a1d1caff9112 SHA-1: 6bc149605a92d50ff3cd54f700e5d662bb9491ad SHA-256: 60e6c8bd8359b32216ea981e023ccff33b56049db89755f00a29562802a129b2
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and generators for virtual currency. The document body explicitly mentions 'Coin Master Daily Gift Free Spins And Coins Link' and 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', indicating a social engineering lure. The presence of embedded URLs and the ML classifier flagging the PDF as malicious strongly suggest a malicious intent to redirect users to potentially harmful content or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/406889139/coin-master-daily-gift-free-spins-and-coins-link-game-hack In PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34BC 24056 bytes
SHA-256: 587a2c3054f3c63adfaa4e2984c0ae1cf173cea239232d9e697931860307cf90
font_01_sfnt_off00006bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC1 18652 bytes
SHA-256: 366d9c9b3cd0388843e044af578ba3ade018a9e96efb4083e0cc5bdd66e71c38

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