Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8addbd5b54346ad…

MALICIOUS

PDF

35.8 KB Created: 2021-07-07 19:10:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fcfc81b2b2e8a8b4d9925f535597e505 SHA-1: 0b0ef9993c0752b01db989d1a084badd9e40bf81 SHA-256: f8addbd5b54346ad14e4a1a57b9b382749c8854ef4681af46b92e185c81ed2c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector infrastructure, masquerading as game hacks and cheats. The primary URL, http://netcdn.tw/app/479516143/minecraft-pe-017-0-apk-free-download-android-game-hack, is flagged as a malicious redirector. The document body and heuristics indicate a lure to download potentially malicious content, likely leading to malware or further phishing attempts. No scripts were extracted from this sample.

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/479516143/minecraft-pe-017-0-apk-free-download-android-game-hack In PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/shower-simiulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/ios-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-on-android-tablet_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-dungeon-quest-rapist-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-free-online-virtual-world-game_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-generator-no-surveys-and-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-roblox-cards-not-used_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-roblox-death-zone_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/wie-hacke-ich-mir-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_off00003329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3329 22648 bytes
SHA-256: 4137aad76022c64447181aefefbad759e49b97aff533ce76f7960ee4b5e29fba
font_01_sfnt_off000065fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FE 19412 bytes
SHA-256: 98bc5863a2ef94ee9cd00eb8fcbf6f31283247a252703102005365b742523eb0

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