Malicious PDF — malware analysis report

Static analysis result for SHA-256 602f1a3e782e4cbc…

MALICIOUS

PDF

42.7 KB Created: 2021-05-13 17:16:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 26626835149bede334db79dfb061c710 SHA-1: 5711d7652d8a81d5538ea7035e2fc6bfeefc1295 SHA-256: 602f1a3e782e4cbc7a5917b3c1247bb43d44b471fbefd8cd4b856fc55a83c071
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses an MFA/2FA-themed lure. 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 0.9971

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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-hacks-and-cheats-game-hack PDF link annotation
    • http://sostactical.ca/images/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sostactical.ca/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://sostactical.ca/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sostactical.ca/images/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://sostactical.ca/images/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://sostactical.ca/images/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://sostactical.ca/images/can-you-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://sostactical.ca/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://sostactical.ca/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://sostactical.ca/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://sostactical.ca/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://sostactical.ca/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://sostactical.ca/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://sostactical.ca/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://sostactical.ca/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://sostactical.ca/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://sostactical.ca/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://sostactical.ca/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://sostactical.ca/images/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
    • http://sostactical.ca/images/get-robux_GM431946152.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_off00004b48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B48 25368 bytes
SHA-256: 2a0ed10a69b93629c68bb294d358420671f4473128c901791ba2805f3376ac3d
font_01_sfnt_off00008544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8544 18056 bytes
SHA-256: b6577ff561e389c2b99f5ce8f4a8129628e3d5fd8b314c611519f3015f10681d

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