Malicious PDF — malware analysis report

Static analysis result for SHA-256 79597badc6259973…

MALICIOUS

PDF

45.8 KB Created: 2021-05-19 06:11:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: af6be14f7c5edd31549877a5e5c50346 SHA-1: 3bc365e2785f05f766fdc45bfeb4e24fa8263958 SHA-256: 79597badc625997347cd79c80a43decd12545dbb1b59b70517064e08b39500ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that point to known malicious redirectors and lures for game-related cheats or currency. The heuristic firings confirm the presence of malicious redirector links and a general lure for game hacks. While no scripts were explicitly extracted, the document structure and embedded URLs suggest an attempt to redirect the user to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • 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.
  • 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/406889139/free-spins-coin-master-generator-game-hack In PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-roblox-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/pubg-uc-price-in-pakistan_GM1330123889.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-coins-coin-master-blog_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C50 25444 bytes
SHA-256: 257a89fbf1710dad8c54bce4064efbf97e28c6c005db80af5a8f2c53043f2c8d
font_01_sfnt_off0000866b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866B 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9195 17884 bytes
SHA-256: 4dbd7a0cfee3c9b81196055844221830545f0b5886b4093cfa91146119426c66

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