Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc8835aab3fbc129…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 10:40:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: feebfcd43c07783e00b25183fb6b023a SHA-1: 0ce12d2ef7beb62fdd2186f2494a2be78d3e2048 SHA-256: bc8835aab3fbc129c8b2b8863aa0c9b3bb31d6508b52dc1ca7cb29adc060a8b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The document body and extracted URLs suggest a theme of game cheats and free in-game currency, which is a common lure for malicious content. The presence of multiple malicious links and a high ML classifier score indicate a strong likelihood of malicious intent.

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/da-hood-pitchfork-hack-roblox-game-hack In PDF document text
    • http://armportal.co.uk/images/roblox-cheat-excecuter_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/trigon-hack-roblox_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://armportal.co.uk/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://armportal.co.uk/images/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/robux-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/45how-do-you-get-free-builders-club-on-roblox_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/free-robux-created-by-jess-the-gamer-girl_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://armportal.co.uk/images/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://armportal.co.uk/images/roblox-no-clipping-hacks_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/roblox-jailbreak-free-money_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/roblox-exploits-2021-free_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/how-to-hack-any-roblox-account-march-2021_GM431946152.pdfIn PDF document text
    • http://armportal.co.uk/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://armportal.co.uk/images/infinite-jump-hack-roblox-download_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_off000031b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B1 21752 bytes
SHA-256: 2c97e7fdb42658f3dca4e8f59769ac634d1b3db191d9e2c17982f5ba39be698f
font_01_sfnt_off0000619d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 19544 bytes
SHA-256: b1fa7b986b279bda09d91ab28f4e8c3f325fefc97d098cc35e8cbbd78d4bd11b

Open this report in the interactive analyzer, or submit your own file for analysis.