Malicious PDF — malware analysis report

Static analysis result for SHA-256 07886cb1b9d7a943…

MALICIOUS

PDF

35.6 KB Created: 2021-07-09 10:32:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ed6336b2e10fc2916acb1dfb8ac01cf6 SHA-1: c8aae017720d909285a985e0702d39fac556fe24 SHA-256: 07886cb1b9d7a943f92032554f04b6a994c39f545a4383d6dcea92ada3cf35ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking a link. The embedded URL, http://netcdn.tw/app/406889139/coin-master-hack-without-verification-code-2021-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to lead the user to potentially malicious content, likely through a web-based exploit or further download.

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/coin-master-hack-without-verification-code-2021-game-hack In PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/robux-come_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/how-to-hack-admin-commands-on-roblox-no-injector_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/working-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-unlimited-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/turk-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsalahsan.com/__statics/gudangsoal/files/free-robux-no-verify-2021_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_002_off0000335b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335B 22544 bytes
SHA-256: 920f2bf1ce094574ff9392d42ff821ced0444c4a32c6b36de034e710191d1a46
font_01_sfnt_off000065a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A6 19216 bytes
SHA-256: f9715f8a5fc3a5974ca02d09a7458c6ee712efb38a426809f6a0982568d4a459

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