Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b786034ed5e26c2…

MALICIOUS

PDF

42.6 KB Created: 2021-05-17 10:35:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dcffbc97372acb7a20a00f60c8544b0f SHA-1: 066018b33eb47ff094e9048b1882f3e339f2444b SHA-256: 6b786034ed5e26c2d9eadb95fadf574f1a79c9acec385201710b011e0af331d9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that point to known malicious redirector infrastructure, disguised as game hacks and free generators. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely leading to a second-stage download or phishing page.

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/431946152/robux-free-2021-game-hack In PDF document text
    • http://jackson-pr.com/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://jackson-pr.com/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://jackson-pr.com/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://jackson-pr.com/images/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://jackson-pr.com/images/lastrick-com-coin-master-hack_GM406889139.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_off0000494b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494B 25532 bytes
SHA-256: 4cd5899a1495c6500f8c5f90cf780431555492668059dc30aca2a1d96f194122
font_01_sfnt_off00008380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8380 18416 bytes
SHA-256: 1a644f5289783458eb76ac5741ebd0afe9ba6d8f40911ca8ddb4573f3c6c1b2f

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