Malicious PDF — malware analysis report

Static analysis result for SHA-256 632e177c9467ba59…

MALICIOUS

PDF

35.9 KB Created: 2021-07-03 11:41:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 4d27e182403d34f8aac245201ed966e0 SHA-1: 7fd1f23d110d135f1cec0c492da4b786cbf8f8c7 SHA-256: 632e177c9467ba594839ab71c7b7404c46948f0c6cd5aed3c9755bc0d0ed5ec1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector, designed to lure users into downloading a payload under the guise of game hacks or free generators. The document body and embedded links strongly suggest a social engineering tactic to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely leading to further malware download or exploitation.

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.tw/app/406889139/daily-coin-master-link-game-hack In PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/free-robux-on-tablet-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/free-robux-generator-august-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/hack-beta-forces-phantom-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/zoo-tycoon-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/for-free-robux-on-roblox-com-free4mobile24-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/minecraft-client-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/hack-de-roblox-dinero-infinito-en-rocitizens_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/how-to-lvl-hack-in-naruto-final-bond-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/how-to-truly-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/rocash-earn-robux-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/roblox-free-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/roblox-escape-prison-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/roblox-free-no-download-online_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/hack-robux-100_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/microsoft-bing-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
font_00_sfnt_off0000368e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x368E 22740 bytes
SHA-256: 121aee22c62b61af3c480c66b232689613ad90449633cac4df73bbc7665f03d4
font_01_sfnt_off00006964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6964 18428 bytes
SHA-256: 2dcee22a6b03a4b992c513bbfe0f36763f489b06b55758f4f0c19510283cc9ec

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