Malicious PDF — malware analysis report

Static analysis result for SHA-256 26c7fbd70dcf98ee…

MALICIOUS

PDF

49.0 KB Created: 2021-06-03 22:08:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 77bfd69bfc3e99dac467edf06722c142 SHA-1: 271adbbe669f85c7f72df1f465f1ab6949053ca7 SHA-256: 26c7fbd70dcf98ee56ea8254b81f8b54d92ac91003ca7cd219d6637328fd8e29
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links to known malicious redirectors, specifically advertising game hacks and generators. The document body and embedded links suggest a lure to trick users into visiting these malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/roblox-piano-hack-game-hack In PDF document text
    • http://library.umla.ac.id/repository/roblox-re_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-coin_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-free-download-unblocked_GM479516143.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_004_off0000517f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x517F 29008 bytes
SHA-256: a4d103d1c089d0e48856962f3bc6c2c945270011486b706d68339f2f49e5495e
font_01_sfnt_off000092aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AA 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5D 18456 bytes
SHA-256: b3a5bdafa913fbeb08409da0979c792cb3491f79dd739ad0ffcb7a8a40d00987

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