Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cff4f5230c50a72…

MALICIOUS

PDF

40.0 KB Created: 2021-05-22 13:47:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1041128376e2aafeb0be5fc7e9b84290 SHA-1: b3bbbb58dc43aadfdefadb67f2a39dbcffba257d SHA-256: 5cff4f5230c50a72a79faeee881a97277634192155cb4d4d67ef9d2b5c7d026d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and explicit calls-to-action, such as 'CLICK HERE TO ACCESS COIN MASTER GENERATOR U!', designed to trick users into visiting external websites. The primary lure is related to 'free spins' and 'hacks' for games like Coin Master, which is a common social engineering tactic. The embedded URL https://netcdn.xyz/app/406889139/coin-master-15-free-spin-link-of-last-5-days-game-hack is directly associated with this lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-15-free-spin-link-of-last-5-days-game-hack PDF link annotation
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/pokemon-go-free-promo-codes-2021_GM1094591345.pdfIn PDF document text
    • http://www.qandqsafety.com/uploaded_files/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn 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_off00003459.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3459 25580 bytes
SHA-256: cd6936f2a77a128ff596d86f1299a2393f5f1b2a6310427f48caa3e95b8fa666
font_01_sfnt_off00006e5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5E 3248 bytes
SHA-256: 3ae56338dad78aed732f4bd6b4b7adb6da14861896ee2d930f9ca6ee8edfa7c8
font_02_sfnt_off0000799a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799A 18644 bytes
SHA-256: 4144dbe1534d0325d37e4c6129895ddb34a2bc26123e242025982d4ceef1bd2b

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