Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f92b9a5fe6f46da…

MALICIOUS

PDF

36.1 KB Created: 2021-06-26 21:38:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d5fca76e263607fe00bc0a4e321b2755 SHA-1: 2101a3319195f589f69016f018385200697758fe SHA-256: 3f92b9a5fe6f46da369ef68f3bf449b36b10fb91a8f57983ee29446da72f3754
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious URL, likely as part of a phishing or scam campaign. The document body and heuristics indicate a lure for free game currency or hacks, which is a common social engineering tactic. No scripts were extracted, but the presence of malicious redirector links suggests an attempt to lead the user to a compromised or malicious website.

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.co/app/431946152/free-robux-real-with-proof-game-hack In PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-cheat-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man4madiun.sch.id/__statics/gudangsoal/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3301 23028 bytes
SHA-256: c87b338b0378d0d6c64eba1c3f4a1eec963ffd6451d4418cbfa1565b918007da
font_01_sfnt_off000066b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B2 19532 bytes
SHA-256: 2af3179ba9fdf1e98419cd353619794dc99045e6ca9ea200d9975ad3672b58f9

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