Malicious PDF — malware analysis report

Static analysis result for SHA-256 f43310f3a1564f06…

MALICIOUS

PDF

30.3 KB Created: 2021-05-12 19:34:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: e7961432338466ec4297d7f672457862 SHA-1: 3cf7280fabf369c19879cb9643e11a4071da469d SHA-256: f43310f3a1564f065b9e5fb9fbb50e0448f1a3b43d0dbf1b2d1b6011d1b27024
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that are flagged as malicious redirectors, specifically pointing to a 'free generator / game hack' lure. The document body, though partially corrupted, contains text related to Minecraft and game hacks, reinforcing the lure. The primary malicious IOC is the redirector URL used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 3

  • 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.
  • 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-bedrock-free-download-pc-game-hack In PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/daily-spin_GM406889139.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://daringman1kra.ddns.net/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a76.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A76 20423 bytes
SHA-256: 8a2826198c623118599f46bd36e02b86bfcba1914bdba32af8fc37830ef6f140

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