Malicious PDF — malware analysis report

Static analysis result for SHA-256 2682fc4287a5b00a…

MALICIOUS

PDF

32.7 KB Created: 2021-06-26 00:21:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b5e6e7c575d8e9d1b9ee090d4475e972 SHA-1: acc8ab3d4137b8f3c48368ca314ee40b2aa1e0af SHA-256: 2682fc4287a5b00a92b35365d49cce2ed6821e5795abfa7f258f86c1e9620747
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and external resources, masquerading as generators for in-game currency like Robux. The heuristic firings indicate these links point to known malicious infrastructure and are designed as lures. While no scripts were explicitly extracted, the document body and embedded URLs strongly suggest a phishing or scam attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-free-robux-generator-2021-game-hack In PDF document text
    • http://perpus.wdh.ac.id/repository/hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-fly-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-hack-bleach-soul-of-end-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-no-download-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-free-webcam-overlay_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-levitation-animation-pack-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000029a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29A0 22068 bytes
SHA-256: 3a9bec658afe52a8b123b1095711ed200dfbd63869e4a22a3e59b46cc09b249e
font_01_sfnt_off00005a2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A2E 19296 bytes
SHA-256: dd0dc3385625b32dc0fa21fba274fc1212d5fca7b963a32bd94fd564e20c7c82

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