Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d9029f51e07b97…

MALICIOUS

PDF

48.7 KB Created: 2021-06-11 06:28:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f10b8e4ba3052ab0ec145666788f4eb3 SHA-1: 8278a2c6d658cd44054e6d48914abd4ec132cf33 SHA-256: d8d9029f51e07b972e187f886277af680e8b7a8715170009740c381c0cb5cb95
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering game-related cheats and generators. The document body, though partially obfuscated, contains URLs that are consistent with a phishing or malware distribution lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/free-roblox-images-game-hack In PDF document text
    • http://croatia-flyfishing.com/files/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/https-wwwrobloxcom-hacks_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.croatia-flyfishing.com/files/hack-xp-mad-city-roblox_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://croatia-flyfishing.com/files/roblox-jailbreak-hack-download_GM431946152.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_off00005153.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5153 24868 bytes
SHA-256: e5277deb2e1669b4b9d46ade947cfbef2cd6b877076a2b42ffc22f4a35551754
font_01_sfnt_off00008afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFA 4568 bytes
SHA-256: bdfd999367d7b183a3b2ec85aca4400453e3bd46103a981e2c55d3a5cf209d16
font_02_sfnt_off00009a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A37 18724 bytes
SHA-256: 166056ed242a72c4cb4c005eeaee189d0cb15821e14f6d3ffaf103bb1bbf6782

Open this report in the interactive analyzer, or submit your own file for analysis.