Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c7d176962811222…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 11:15:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: fe45a78c718ba383ce23b10883330a81 SHA-1: c3689ff9103141ebcff6e2b9f6eaf14a580a5fe4 SHA-256: 6c7d17696281122203ac1362df7557bbef7d68883ec61122583682d2de3b3b04
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game generators and hacks to entice users into clicking malicious links. The document body and embedded URLs point to redirectors that likely serve further malicious content or malware. The heuristic firings confirm the presence of malicious redirector infrastructure and a lure designed to trick users into downloading or visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/free-minecraft-alt-generator-game-hack In PDF document text
    • https://humansci.kyst.com.tw/image/data/files/www-rbx-com_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://humansci.kyst.com.tw/image/data/files/roblox-promo-codes-2021-robux_GM431946152.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_003_off00004aaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAF 25752 bytes
SHA-256: 9df25959e173e5b4a7788bbc463097a702b3d2f0217281c4d31a69e1f6181710
font_01_sfnt_off000083cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CC 17784 bytes
SHA-256: 66ae3cfb6d310f144f42187aaa203441353bb0cc88c1a3915b2f7a14fa3c41b8

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