Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc782b996b3b1224…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 23:51:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2a3e30d2c9d7b281328acfd1757a8f7d SHA-1: d8e6847c9374cfb45b3e650ef8c67725dfda7129 SHA-256: fc782b996b3b12247dac400c8e0bbf46c4462c66cb774a771ead56616c4f9af9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The primary malicious URL identified is http://netcdn.tw/app/479516143/how-to-hack-minecraft-pe-game-hack. The document's content and embedded links strongly suggest a phishing or malware distribution attempt.

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/479516143/how-to-hack-minecraft-pe-game-hack In PDF document text
    • http://www.hlad.hr/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/free-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://www.hlad.hr/files/how-do-you-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.hlad.hr/files/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-hack-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-game-nocopyslocked_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/www-roblox-com-sign-up-for-free_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-roblox-robbux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-roblox-gamepasses-app_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-coins_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-high-school-2-cheat_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-speed-hacks-free_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_off00002e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5D 22424 bytes
SHA-256: 4eb8ee203b7553377e55be6e2de0b82003511615c0a31b10f0fa12350ab638f4
font_01_sfnt_off00005f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9D 18488 bytes
SHA-256: 219457e29f33dfec07786a29e70830a20555f796e9e6bb3f533c171663b580ef

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