Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a57cc990690749…

MALICIOUS

PDF

43.2 KB Created: 2021-05-12 18:07:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 19cb0e420aba614f26cdef7c330d3af6 SHA-1: 68d82fec0601327df10755487e45113cfc176e9a SHA-256: 60a57cc99069074983b082e7e7bdfdb49304a10d5375f6872a3a2567bc30f1cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, disguised as a 'free generator / game hack'. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-coin-app-game-hack In PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2lamsel.sch.id/__statics/gudangsoal/files/best-free-spin-app-for-coin-master_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
stream_003_off00004bf6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF6 26464 bytes
SHA-256: e7246826ef35db4da3f21868f2b50932d8b8fd73013bfe13d5a943a3f4630654
font_01_sfnt_off000088d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D5 17552 bytes
SHA-256: 3e821414a1aa04839473d5e3e49ecd37671cffeae8faf9e4bac32a085a39f5e4

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