Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbfda91ce673f886…

MALICIOUS

PDF

47.0 KB Created: 2021-06-09 12:45:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 31a305e88448bee88590c497dc883002 SHA-1: 678670f080eee1deb8568de15bc74a20579b2a51 SHA-256: dbfda91ce673f8861390081a4736d9a9e0731f78ab33a986751c122277702013
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, disguised as a lure for free in-game currency or game hacks. The document body and heuristic firings confirm the intent to redirect users to potentially harmful content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/get-free-robux-without-survey-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/roblox-robux-page_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-stuff-codes-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/money-in-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-free-no-virus_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53B4 27984 bytes
SHA-256: 46e99d60e9516dff947c40c21004bd7b25b2c3113a65710aacd08e66c9cbd0eb
font_01_sfnt_off00009392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9392 18896 bytes
SHA-256: f84dfdf8e59347dbea636eff3ec4111507ee9ce65d60e3655eb8be55ff80bc6a

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