Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7d128229de94080…

MALICIOUS

PDF

44.1 KB Created: 2021-05-12 17:04:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 791448665b86ae0fb13dc26cfd6d72d5 SHA-1: c62f5a1e1751bee2c359dde52f7342576270ba39 SHA-256: b7d128229de9408032951206fed4efb3b7e9084f02df3a1704f9ec25e6552998
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors, disguised as game hacks and free generators. The document body also includes a call-to-action phrase, reinforcing the lure. These elements strongly suggest an attempt to trick the user into downloading potentially harmful content.

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/479516143/download-minecraft-java-edition-free-game-hack In PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/robux-sign_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/coin-master-website_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/hacks-master-coin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/easy-points-gg_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/earnrobux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/moon-active_GM406889139.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.mtsngresik.online/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_003_off00004f0b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F0B 25788 bytes
SHA-256: 974173a262e7a9a51099ab54312ca96686678b1c0d0a6e7653ca58284c9fcf98
font_01_sfnt_off0000891d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x891D 18572 bytes
SHA-256: 152a86aa2203223781754dc8feb17de20161f8fdf6bb3f234180a5bd0d211371

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