Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ddf7131e572e5…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 22:27:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 9e95e092f0e4115ea1f01706c45dd2db SHA-1: b5666f9f5c84be0fc6e310e721adb2beac09b38b SHA-256: af2ddf7131e572e579cd3fdb1759fabc62fe9656b07bee2b01b80b7a233ab9e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/roblox-jailbreak-wall-hack-download-game-hack, which is associated with a 'free generator / game hack' lure. The document body and embedded links reinforce this theme, aiming to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-jailbreak-wall-hack-download-game-hack In PDF document text
    • http://www.sbairs.com/datas/files/free-robux-by-downloading-games_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-attack-hack-apk_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/pubg-uc-kodu-yazma_GM1330123889.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-and-fast_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-free-catalog-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f58.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F58 22644 bytes
SHA-256: f1967e86f19ee1124dfb92d2dc53469bab7a0f896ca225f24cae6609c1c5f950
font_01_sfnt_off000061f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F2 19648 bytes
SHA-256: c18b6732442a2ceb93fe40912d8d3815e54d319a14e6caf011b36fadf402e212

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