Malicious PDF — malware analysis report

Static analysis result for SHA-256 11555685b712c647…

MALICIOUS

PDF

44.9 KB Created: 2021-05-16 18:54:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 13fae7ca83c5e31c160ee5ee0d27a726 SHA-1: b03ddc692c7fb8f89d28006a5a5aa2d24191b9ab SHA-256: 11555685b712c6478e37f67263ed868ff0ad2255f513ab9f25b564e9324c341b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and free currency. The ML classifier also flagged this PDF as malicious. The presence of multiple links to known malicious redirectors and the lure of free in-game items strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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 https://netcdn.xyz/app/406889139/coin-master-heaven-links-game-hack In PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000491b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x491B 26484 bytes
SHA-256: 76135eaac29892f99b44c3fab3a614f062c4b4b20f614e39a1debb678cbe2c06
font_01_sfnt_off00008313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8313 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3C 17828 bytes
SHA-256: 86bc3ccbb1f0b7eb9d1186ac4a23e04190280488fc5550aa3b02c029ce2559b9