Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bd6ccb1c0894159…

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 04:27:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: ba269a57e7c5b1b514bc6ef8fbd99e5b SHA-1: 0056ef79a29d599a1c774046ff3473c470f10a50 SHA-256: 2bd6ccb1c0894159e3c082ec09b021bab5b1a2c7a8eeda6a76243146fa4e468f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one pointing to 'netcdn.tw', which is identified as a malicious redirector. The document body and heuristics suggest a lure for game hacks or generators, a common tactic for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links indicate an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/479516143/minecraft-online-free-no-download-game-hack In PDF document text
    • http://agritrade-ukraine.com/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://agritrade-ukraine.com/images/free-robux-websites-no-human-verification_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_off00002dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBA 22420 bytes
SHA-256: ec20565d8f3666dbba1f32ca30a7cc7a24da57158ecc6717616b525772f2f667
font_01_sfnt_off00005fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB4 18292 bytes
SHA-256: b061ada675b676782f5f9f5eef39691e0700ad1698d2269622484eea1080e831

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