Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd867649e0e6f78d…

MALICIOUS

PDF

46.7 KB Created: 2021-05-11 22:23:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b9e3c16d345081536525670a3c1f2cfc SHA-1: 28c909392a3d869c471d5ad7b29fb298d26ebd16 SHA-256: dd867649e0e6f78d6749b40059f0084d64e87af6990b20619d8eddd3990cc352
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that point to known malicious redirectors, specifically targeting users interested in game hacks and generators. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates an attempt to lead the user to potentially harmful content or further malware downloads. No scripts were extracted, but the document's structure and embedded URLs are sufficient to infer a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9879

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/roblox-com-games-referrer-roblox-player-game-hack In PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/wurst-hacks_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/robux-cheat_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/mc-update_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-800-robux_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e26.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E26 24244 bytes
SHA-256: 516236df984ea8648c8e4ce51ba6d0e269808312afd98ef0fb41f7db31c3c76f
font_01_sfnt_off0000858b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858B 6100 bytes
SHA-256: f866077ce59d6ea276f75e4af76daa2aab5f3a1a679df144776123d85664d65c
font_02_sfnt_off00009417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9417 18608 bytes
SHA-256: fe127bfd5ab6a4b2b53b099a15c551b8e40bc135ed62b4e782cd2911e4f76f6e