Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe42ef898e914a88…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 19:22:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: f4a50e476a81a247eb294d1195cb64c2 SHA-1: ef371c96614d0dac49c94952316e6fa664ef12c5 SHA-256: fe42ef898e914a88400a782bc2b5f48effcf45dc7a62fd67ca6667edd193d603
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or downloads. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or scam attempt.

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/cheats-for-coin-master-game-hack In PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/roblox-gift-card-codes-hack_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/pastebin-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/cool-avatars-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/robux-app_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.man2bandung.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-no-survey_GM406889139.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_off00003435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3435 22972 bytes
SHA-256: 487972879c0cd5bf73cfbd77f9b3906606c1f100c5a7d186abb683be9d9e2f79
font_01_sfnt_off000067cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CB 18164 bytes
SHA-256: c315ccf9a79b36be1a03c3aee76827ab51131b40fc24ac36c1cd3f6d313de72a

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