Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e2125d01701077…

MALICIOUS

PDF

52.9 KB Created: 2021-06-09 07:18:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 46cbcb30e315dd22b868b7b8ebfcb733 SHA-1: 0ede7e81dd8585b153963554705d7189be7f71f7 SHA-256: 64e2125d01701077f2df5d518a95eacac31e1a83beef1bc8a3bf30e21f607dda
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and generators. The heuristic firings indicate that these links are known malicious redirectors and are part of a lure for game-related exploits. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9614

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.tw/app/431946152/how-to-get-free-shoulder-pets-on-roblox-game-hack In PDF document text
    • http://heilzentrum-ulm.de/images/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/ezrewards-free-robux_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/como-hackear-los-robux-de-roblox_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/roblox-free-trade-bot_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-get-money-on-roblox-a-hack_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/wearedevs-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-roblox-mad-city-vip-server_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/robux-free-tips-apk_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/descargar-hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://heilzentrum-ulm.de/images/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000513c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x513C 35308 bytes
SHA-256: 1d0e2383400ecd81b5f41e6fca0551dee373942cdd92955ac100fd369c052409
font_01_sfnt_off00009e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E90 3512 bytes
SHA-256: 928080e8f7b29edbf2fbae3fe88d3bd557e74c99d6f14676ffb2de9a84d75ff8
font_02_sfnt_off0000aafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAFC 18848 bytes
SHA-256: ded0e9bf7829c9a03dbca71ad1a15a02933e833a0f1f9b4d6b9fd0b1e03315dd

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