Malicious PDF — malware analysis report

Static analysis result for SHA-256 22926dc4e2f6dcae…

MALICIOUS

PDF

35.3 KB Created: 2021-06-23 16:55:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ada602b0de8fa83b5e7830fd1fd3096c SHA-1: 29d4d26e175a8fd8674dc0c3ffb9530b80fba368 SHA-256: 22926dc4e2f6dcae0758f2b12715ebc1a1fb6ba5feec7f6c91fe07d892364e7a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary link, http://netcdn.co/app/431946152/roblox-hack-unlimited-money-pc-game-hack, is associated with a 'free generator / game hack' lure. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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-hack-unlimited-money-pc-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-you-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/parkour-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-any-tycoon-game-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-2021-late_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-anime-fighting-simulator-free-vip-server_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-can-you-get-free-robux-on-laptops-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-promo-codes-for-robux_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_off00003123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 22468 bytes
SHA-256: 716f95a852a867337aa1abfdc509685b8fec6ad9366f95e91f65067b3bb47dd5
font_01_sfnt_off000062d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D2 19844 bytes
SHA-256: cb763f31816e46de77a5f8dae9e39dc994bb7fdb8caad429022ef09028b1608e