Malicious PDF — malware analysis report

Static analysis result for SHA-256 feb7f3df49fe0443…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 22:37:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f8ccea55102b31f7a74bc05ce18eff7d SHA-1: aac4ca571299e77912405561b89a93d75df91812 SHA-256: feb7f3df49fe0443b3fb6bcb2880f3f0ebfd444b0ae60756ed60dec356c5d025
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector. The document body and embedded links suggest a lure for game-related cheats or generators, aiming to trick users into visiting malicious sites. The presence of these links and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful content.

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/406889139/coin-master-game-hunters-club-game-hack In PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-robux-fast-and-easy-2_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-creator-free-vip-server_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/weight-lifting-simulator-2-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-obc-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-tshirt-roblox-nike_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-developer-tools_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-no-password-or-username-may_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/daily-coin-master-free-spin-apk_GM406889139.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
stream_002_off0000325b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x325B 23076 bytes
SHA-256: 4911fc4ee0395730a1b86c14fc7ea38aaa82991b8d2c8f02d8e95661a087ba7b
font_01_sfnt_off00006656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6656 18468 bytes
SHA-256: 89686f82b30a45f913bec269d2f6275be7871e2e7b85c52696b637769d10879d

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