Malicious PDF — malware analysis report

Static analysis result for SHA-256 547baca74459d359…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 20:01:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 35eaa144fbae4008b1f9763b4d33920a SHA-1: aade268fd851f589b1929b0058470f93606f7625 SHA-256: 547baca74459d359fb6a51f73cc249015033d9b326c9960e0d614c4a7a8ea936
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and mods to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The ML classifier strongly indicated maliciousness, and the document's structure and content align with social engineering tactics to compromise users.

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/479516143/free-mods-for-minecraft-pe-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/pokemon-go-free-roam_GM1094591345.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/tiktok-free-10k-followers_GM835599320.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/what-is-the-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/this-roblox-shirt-gives-free-domimnus_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-roblox-accounts-with-bc_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/pokemon-go-no-free-box_GM1094591345.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-hack-someone-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/free-robux-generator-no-human-verification-or-offers_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-get-free-robux-kazok_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_off0000311c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x311C 21880 bytes
SHA-256: 17c52e698a559d61749abd3403f975f327e812d8895738ed585f2bf33fcad74d
font_01_sfnt_off000060fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FE 18324 bytes
SHA-256: 6654eaae5534462051d4d15c9b2a2db406e5011fb4f6a93ce1582a2079ce45bc

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