Malicious PDF — malware analysis report

Static analysis result for SHA-256 278a63fbca5bb51a…

MALICIOUS

PDF

35.0 KB Created: 2021-07-09 16:29:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ca92832044825cbc19d761ab16538e8 SHA-1: adfd84fc77526b5e1e10dff9491bfc29d9e35288 SHA-256: 278a63fbca5bb51acdc8ff9cfef9676f59103585b52e453c59518df42e56809e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and known malicious infrastructure, disguised as game hacks and generators. The primary lure is the URL http://netcdn.tw/app/479516143/minecraft-iphone-free-game-hack, which is associated with a 'free generator / game hack' lure. The document body and embedded URLs reinforce this deceptive tactic, aiming to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-iphone-free-game-hack In PDF document text
    • http://simon-skov-fougt.dk/billeder/free-online-coding-courses-for-kids-roblox_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/dragon-life-roblox-hack_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/robux-bandit-free-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-hack-roblox-jailbreak-easy_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/promo-codes-for-free-stuff-2021-roblox_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/can-roblox-ip-ban-you-for-hacking_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/hack-roblox-kewlaid_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_off000032d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D8 23192 bytes
SHA-256: c5804dc5754323b310598a10a857e1ec793c11744a04f8b96c7501751137f51d
font_01_sfnt_off0000664d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664D 18340 bytes
SHA-256: 36843951ab4b938cf80043c779475624b7eae87cd236454952c5db411bb3a5f5

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