Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb4daf5dac0fd93…

MALICIOUS

PDF

41.5 KB Created: 2021-05-12 08:12:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 41bc130f730dbcb665198cd3ab499e02 SHA-1: 0f355550bf697cb329c0f22b09df874f80aeef07 SHA-256: 0fb4daf5dac0fd935add1f27e1d85c226355d16345f0b6106baa49ef0b81ea55
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links disguised as game hacks and generators, with a primary link pointing to a known malicious redirector. The document body and heuristics indicate a lure for free in-game items, a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution or redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-free-chest-in-coin-master-game-hack In PDF document text
    • http://g3galileo.com/images/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://g3galileo.com/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/roblox-demon_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://g3galileo.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/free-robux-net_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
stream_003_off00004867.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4867 25192 bytes
SHA-256: 81f9bb8f869c644c7f0f4bd9c8ef48b902f8a4676931a87b45ba37a084962a19
font_01_sfnt_off000080d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 18040 bytes
SHA-256: dd45839ce523a02485ada9bda8bf9a9943bac425c6d38b43d03ec8dcbfa0b602

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