Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e7bb7bc3d15a0b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 06:40:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4272adf6d4d7c8f794d73aac9f1fc057 SHA-1: 08fd81169acbd85f5b0727aa0daa975b6c03c774 SHA-256: 72e7bb7bc3d15a0b5c9ad9157080cc79a4d65702dda5796a3f16bdae74059627
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that lead to a known malicious redirector, likely intended to deliver a payload or phish for credentials. The document body and heuristics indicate a lure related to free game items, such as 'Roblox Free For Tablet'. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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-free-for-tablet-game-hack In PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-promo-codes-2021-october_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/cheat-for-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-mano-county-hack-gui-pastebin_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/www-robux-com_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-clothes-pants_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-legit-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-35-000-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coins-spins-on-coin-master_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3244 22108 bytes
SHA-256: 65cb312ddb23204203b4eec27f2413adf1a5b0353b9b4eeb37e12715917809a7
font_01_sfnt_off00006340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6340 18752 bytes
SHA-256: b29aa8a57b8bf94ff9b27de4e0ffa3c3a397a2944a73e8a8f6e2fd57afc8b82b

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