Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeff1c6ef2a05c10…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 09:40:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7f69f39a0ee68f6235b7efeac9dc5380 SHA-1: 816f14db45af72c875fed6cadcd7c09abb83cae2 SHA-256: aeff1c6ef2a05c10e90cb39d4d28eae84e8858436eafcd96813cf48cc08f9e81
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector, that promise game hacks and generators. The document body explicitly mentions 'Download Coin Master Hack Mod Apk' and provides the malicious URL. This indicates a lure to trick users into downloading potentially unwanted or malicious software.

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/download-coin-master-hack-mod-apk-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/wurst-115_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-hack-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/can-you-download-minecraft-for-free_GM479516143.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_off000030f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F9 22888 bytes
SHA-256: 93620812faebe6f7b02990b36a1a17e67864035df880e6dfc45742c9b4911bbf
font_01_sfnt_off00006467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6467 18760 bytes
SHA-256: a9106ec8bdb2ef00eddd29af2fd5eb663302a9539c133b1226910953e26aec8b

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