Malicious PDF — malware analysis report

Static analysis result for SHA-256 71c5c44e42eabba2…

MALICIOUS

PDF

41.0 KB Created: 2021-05-16 06:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 36d49dc2c6c021ebc636c4f4f2ac5c27 SHA-1: b871eb47837e89f9cbff87ecfcbeb9701bf02414 SHA-256: 71c5c44e42eabba2044b6267a4ed5af6879a27abb16b183d04546f3cf5a7a48c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains this URL and other similar URLs, suggesting a social engineering attempt to trick users into visiting potentially malicious sites. While no scripts were explicitly extracted, the nature of the lure and the embedded URLs indicate a likely attempt to download further malicious content or redirect to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/are-minecraft-realms-free-game-hack PDF link annotation
    • http://beautyforyou.fr/images/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-game_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/wurst-115_GM479516143.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-hacks-for-free-spins_GM406889139.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_003_off000047e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E9 24232 bytes
SHA-256: 657a3e73d989dbdd26f9b0a92e4ac2c84541296c45b4c4ff5cd20a76e2cb4798
font_01_sfnt_off00007f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3C 17900 bytes
SHA-256: 8eb15ed8310af5fb76432a47ac68b1e7755fcf2aff13e182d9ea68cdb87c7182

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