Malicious PDF — malware analysis report

Static analysis result for SHA-256 01dfd326fb9d28f3…

MALICIOUS

PDF

46.5 KB Created: 2021-05-31 06:02:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ee2712a5d1ab6827b9285c9ad2b4d25b SHA-1: 3a5fa2d68949e7606700abaf66cf38338e83057b SHA-256: 01dfd326fb9d28f344929cdf495acc6e8c8593243152276f72465f2a7bd0fd98
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to potentially malicious sites, masquerading as free game items or generators. The primary redirector URL is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9418

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 https://netcdn.xyz/app/406889139/daily-free-spins-for-coin-master-game-hack In PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-minecraft-pe-server_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
stream_003_off00005624.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5624 27648 bytes
SHA-256: a7cb77869c8a269ea6c417c9ff5dd18a7e9e83f61e44cc8968cfa360e93f194c
font_01_sfnt_off000092d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D5 18308 bytes
SHA-256: b750d5a8b44caccc122b2ff8294eb9307e18e87e3916697a2a7f0c063c77f291