Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffed90a061016efa…

MALICIOUS

PDF

34.6 KB Created: 2021-06-22 07:24:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 35e2cacb163f54df9e653bf2adce3eb8 SHA-1: e74adb3a684ed1869f4d9b37e7f3848b00b277e7 SHA-256: ffed90a061016efacea19321f826d52226d8c4c3ebd90a3c411871668c23607f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a malicious domain, masquerading as a generator for in-game currency and hacks. The document body explicitly mentions 'Como Tener Dinero Infinito Roblox High School Hack' and includes the malicious URL, indicating a social engineering lure. While no scripts were extracted, the presence of malicious redirector links and the lure strongly suggest a phishing or scam 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.co/app/431946152/como-tener-dinero-infinito-roblox-high-school-hack-game-hack In PDF document text
    • https://fordogtrainers.mx:443/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-anime-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/roblox-games-which-give-u-free-robux_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/roblox-arcane-adventures-cheats_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-robux-2021-android-no-human-verification_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/how-to-hack-roblox-accounts-on-ios_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/how-to-hack-in-survival-303-roblox_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/roblox-admin-cheat-engine_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/roblox-wall-hack-jailbreak_GM431946152.pdfIn PDF document text
    • https://fordogtrainers.mx:443/images/inappropriate-roblox-games_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_off00002ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF0 22112 bytes
SHA-256: 407dd0a53befaeb472eb30fb8c7682d628700eec01f838eb85e45e27cf514f3c
font_01_sfnt_off0000611c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611C 19472 bytes
SHA-256: fcb208f7bb837efbf5ecb428dabee0a788a3f5b87bddf8407ba524d9de437f71

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