Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc821fab07ef29a…

MALICIOUS

PDF

50.7 KB Created: 2021-06-03 07:34:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 29888cb1bcd9b2c885804a6a48e2059a SHA-1: 8d146b45cb87df8db5516fd99eba5fb239ebac6e SHA-256: fdc821fab07ef29a2387fdf5b7c37fc9619af28919948402e4aa86a9f4cdda2f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free generators' to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document's structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9681

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.online/app/479516143/minecraft-windows-10-edition-hacks-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005493.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5493 24616 bytes
SHA-256: 294076708fed1b032a16569f4617f1ab5d386b3493572b8196595b43ac2482f3
font_01_sfnt_off00008cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEF 3100 bytes
SHA-256: 91fce1b5e6ef898fe8410f4be8277de24b1e71a83dc827fc4c1cab559d5f4b9c
font_02_sfnt_off000097a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A7 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off0000a1b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B8 18696 bytes
SHA-256: 57995c7d2e560419c32609fd78c9e8de7fe6f2ec65952b3fe21507803a80983b

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