Malicious PDF — malware analysis report

Static analysis result for SHA-256 673923cab9c6019f…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 05:50:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3318c5d80fd2a4df377f4d00b1845fb0 SHA-1: 119b96f624a0248326b8323b7cb82a74726becca SHA-256: 673923cab9c6019f9e7bd825753b78e8e140cae6449111a4044251d8dd96933b
200 Risk Score

Malware Insights

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

The PDF contains multiple links to malicious redirectors, disguised as "free generator" or "game hack" lures, which is consistent with phishing or malware distribution campaigns. The presence of an MFA lure suggests an attempt to harvest session tokens or bypass multi-factor authentication. No scripts were extracted, but the document body and heuristics indicate a clear intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • 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
  • 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/431946152/how-to-get-free-robux-without-verification-2021-game-hack In PDF document text
    • http://ladagoterie.fr/images/www-robux_GM431946152.pdfIn PDF document text
    • http://ladagoterie.fr/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://ladagoterie.fr/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://ladagoterie.fr/images/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://ladagoterie.fr/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ladagoterie.fr/images/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://ladagoterie.fr/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://ladagoterie.fr/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://ladagoterie.fr/images/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://ladagoterie.fr/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://ladagoterie.fr/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://ladagoterie.fr/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://ladagoterie.fr/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://ladagoterie.fr/images/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://ladagoterie.fr/images/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://ladagoterie.fr/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://ladagoterie.fr/images/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ladagoterie.fr/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ladagoterie.fr/images/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://ladagoterie.fr/images/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F1 25220 bytes
SHA-256: 51af6c0b6013715936bd0ce0c53e341d90c1958ec679427707b2457b6bf10abc
font_01_sfnt_off00007f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F87 19528 bytes
SHA-256: 1b346556c7df455cb9a54b8f1a6e3f1a0bfffa2d9228fa0640c35d2bdb9db684

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