Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0795c994e304200…

MALICIOUS

PDF

47.1 KB Created: 2021-05-13 22:36:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d3bc3c9892bf5d544590bd554116b3f7 SHA-1: 307ae7ac2ff5b3f871eedc5b06de3c53c3620db5 SHA-256: c0795c994e3042007dd5f2c676d97b2096ef00dc1428fa228a630866b34a59af
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains that are flagged as malicious, specifically promoting game hacks and free currency. The document body and embedded URLs reinforce this lure, suggesting the primary goal is to drive users to potentially malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/406889139/master-coin-hack-apk-game-hack In PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/robux-download_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/freespins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/coin-master-free-spin-group_GM406889139.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://elearningmts.nurulfalahalhuda.com/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c37.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C37 30348 bytes
SHA-256: e9a75e78decb07ee6eaa04049161fcbe07134d7fa8b7aa346c4ad614f6f103ce
font_01_sfnt_off00008ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA3 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off000096cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96CD 17892 bytes
SHA-256: 41282dcb1c000e988ea8b2199b00347d54e117e16c55148ab4165d720f01bc1d

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