Malicious PDF — malware analysis report

Static analysis result for SHA-256 1279fba648ac7aae…

MALICIOUS

PDF

33.7 KB Created: 2021-06-20 18:38:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b69522b834b80e2b1be98bbeaf25b4e5 SHA-1: 59e87893fc9c4b97280f1f912c066cc5eeb8bfcf SHA-256: 1279fba648ac7aaec32043fc9ddea7023376119059cf675cc15dcfb0f0cf6d5e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'free game hacks' and 'robux'. The primary malicious URL identified is http://netcdn.co/app/431946152/xbox-john-roblox-free-game-hack, which is flagged as a known malicious redirector. The document's content and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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/xbox-john-roblox-free-game-hack In PDF document text
    • http://pia2000.net/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/someone-hacked-my-account-roblox-how-to-get-robux-back_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-hack-any-user-in-roblox_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-and-safe-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-lost-game-hack-script_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/accounts-that-give-free-robux-when-you-visit-it_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-hack-tool-2021_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_off00002e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1B 22064 bytes
SHA-256: b4f62f0c482ff1930723380980f6a01a3c7f579cbde0a549bac5b1d54ce649a9
font_01_sfnt_off00005f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F01 18984 bytes
SHA-256: 370c99a5af27be65d58e2280f92a073836d2ea92315936f7315f9e92da0af6c9