Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f675f1e943f6a42…

MALICIOUS

PDF

34.6 KB Created: 2021-05-23 20:43:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cc722268d7dfa40ff9b6dd04c4244820 SHA-1: 25a0f30b623015807c6714bfadda7c03e9265ecd SHA-256: 1f675f1e943f6a42ef3bdd84871e1b5fd6d169c31cd25f5e606f5b57fd58f77a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/479516143/minecraft-life-hacks-game-hack PDF link annotation
    • http://www.eurosan1.ba/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://www.eurosan1.ba/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.eurosan1.ba/images/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://www.eurosan1.ba/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.eurosan1.ba/images/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://code.giftcards.comIn PDF document text
    • https://discord.ggIn 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_off00002ee3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EE3 24928 bytes
SHA-256: f670f7b4ed251f34671bd7ade695263bc28942bacac018a5c779a24d28291a14
font_01_sfnt_off0000679e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x679E 17740 bytes
SHA-256: a9f228f82f523f82f2ec29969fa693daed0cd9273bc8dad9e6ca4184f04ba0fe

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