Malicious PDF — malware analysis report

Static analysis result for SHA-256 8faf6d34391467d8…

MALICIOUS

PDF

44.4 KB Created: 2021-06-07 03:47:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 220f1e66bb2457eb75a7018c9b47b882 SHA-1: 66d858474f0cc9eae38f72083386d0685c817f18 SHA-256: 8faf6d34391467d80ca6b3d0b57ad863eeb0729d73876e431c530e37b3237694
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks and free generators. The primary malicious URL, https://netcdn.tw/app/431946152/roblox-hack-jailbreak-2021-game-hack, is embedded within the document body and linked via heuristics. The document's structure and embedded content suggest an attempt to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/roblox-hack-jailbreak-2021-game-hack In PDF document text
    • https://www.ak-oroslavje.hr/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-pet-food-on-coin-master_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_004_off00005011.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5011 24940 bytes
SHA-256: b52760d54787f35a988ae5477c8cb3f5ac5bc5ba675a7dd093b9e65abc9ed895
font_01_sfnt_off00008928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8928 18868 bytes
SHA-256: 6904fb95121c1c1438a893c3deaa45abc163de94bbdac3041960213d42302a7a

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