Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba6dcea10eb6e00…

MALICIOUS

PDF

54.7 KB Created: 2021-05-13 05:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 59eb4cc4334d56d2f8750be8193e1309 SHA-1: 1178fb41fa9963b0ed90234a120b36ce05285aaa SHA-256: dba6dcea10eb6e0059a8d2d2924a1ceb844a8a7bd6c231c7fdbf80ed80c6c1a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to websites offering game hacks and free currency generators, a common lure for phishing and malware distribution. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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/coin-master-free-coins-and-spins-2021-game-hack In PDF document text
    • http://eurosystemssrl.it/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/generator-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/abd-roblox_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CC 25852 bytes
SHA-256: f0de2daf5510c74e72299a5b908635ab242a11ff10a32ef2f4c1ea7d1cbaa21b
font_01_sfnt_off000085c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C1 3208 bytes
SHA-256: a15fc42090f1249e8cbbc84e251953880bd2ef068ad1b2caca2ce3b085ce5c45
font_02_sfnt_off000090f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F3 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA419 18460 bytes
SHA-256: 9b9248072d2421e664493d6d5ab14406474bc62db1d786ff94b6c1680f0f8261
font_04_sfnt_off0000c6c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C8 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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