Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb29bfb915620c89…

MALICIOUS

PDF

35.5 KB Created: 2021-06-19 02:23:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8b2963cc72a32f086c88d57609d05163 SHA-1: 3e54fd890669a0cdf2f72515439fcff3a6be1941 SHA-256: eb29bfb915620c8988637229146df6c00015b3041d05a1ee97d128b2a54ffeda
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users with promises of game hacks and free currency. The primary malicious link is http://netcdn.co/app/431946152/how-to-get-free-robux-with-roblox-gift-word-press-game-hack, which is designed to lead users to potentially harmful content. The document body and heuristics confirm this lure-based social engineering tactic.

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/how-to-get-free-robux-with-roblox-gift-word-press-game-hack In PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/roblox-hack-xenox_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-robux-generator-that-actually-works-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-robux-lice_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/apocalypse-rising-roblox-hack-25-02-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/master-free-spin_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/roblox-rc7-hack-scripts_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/face-png-roblox-free-face-q-se-queda-para-siempre_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/roblox-studio-free_GM431946152.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
font_00_sfnt_off00003229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3229 22272 bytes
SHA-256: 4b917e10ae659db0e6a4cfb09f72255786905d1f33dc77dc7e89ce0405956dd6
font_01_sfnt_off0000639d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639D 19872 bytes
SHA-256: e32feb087d219fbf05a908520620d02b2a0ca9128b37525816e9806d8ea316c7

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