Malicious PDF — malware analysis report

Static analysis result for SHA-256 740e7bef1282b43f…

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 02:37:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e53541a360f43c03d5dca82af5e5739b SHA-1: ce0956b9b755eedb544217f43c8715f77300c993 SHA-256: 740e7bef1282b43f20b3041b9456083d89fdd817acbfc0cec948272f8ee8e4db
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This 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.co/app/431946152/roblox-strucid-hacks-pastebin-game-hack, which is part of a chain of redirects. The document's structure and embedded URLs strongly suggest a phishing or scam campaign designed to lead users to potentially harmful content or further malicious sites.

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/roblox-strucid-hacks-pastebin-game-hack In PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-net_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-download_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/red-boy-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-without-downloading-for-free_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-roblox-premium_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_off00002dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCC 21424 bytes
SHA-256: ea90cadcc26c4a2140d9b33801173b85f09c01c1f641d9f1ae9d1e51d68f8541
font_01_sfnt_off00005cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAE 19348 bytes
SHA-256: 31b332e39f91364a354677b452eb0b769072648fb4ee17adbc53141060186da4

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