Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c055e6a5e43419…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 07:50:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 8abbe345b3867fc4f5cf1e0d71143c2e SHA-1: 162651e792d95451197af18fa647ed77f71ead9a SHA-256: 93c055e6a5e4341976fda0576c83e4ee3191fa56cd9bdd3b6c48995879f27d30
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one pointing to known malicious redirector infrastructure at http://netcdn.co/app/431946152/roblox-logo-t-shirt-free-game-hack. The document body and heuristics suggest a lure for game-related 'hacks' or 'generators', likely intended to trick users into downloading malware or visiting further malicious sites. No scripts were extracted from this sample, but the embedded URLs and redirector findings are strong indicators of malicious intent.

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/roblox-logo-t-shirt-free-game-hack In PDF document text
    • https://elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/roblox-free-no-login-or-password_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/free-robux-generator-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/2gunda-parte-del-hack-de-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsn2ska.sch.id/__statics/gudangsoal/files/minecraft-hacked-client_GM479516143.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_002_off00003042.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3042 22468 bytes
SHA-256: 76766d851d3b47194bc8849b1d9c2b190147c60df6858ec123a0a1b54f8004b2
font_01_sfnt_off00006240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6240 19040 bytes
SHA-256: 22003c392ef4c52a1ace0555d3da4b741f9ed0caaa2682545b0cafeb423c90d6

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