Malicious PDF — malware analysis report

Static analysis result for SHA-256 a06fd20b439185f2…

MALICIOUS

PDF

36.1 KB Created: 2021-07-03 18:40:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 830f8bc4d4520f58983e9f8a280bb950 SHA-1: 44f8d7353f82d97bb82a14746c3895114b87ccd1 SHA-256: a06fd20b439185f20b9b5b6f1fafe0a1977c21ae99a251f0de049ce0c9fef3ee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a lure for downloading potentially malicious content like game hacks. The ML classifier also flagged this PDF with high confidence. The primary malicious URL identified is http://netcdn.tw/app/479516143/minecraft-114-download-game-hack.

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-114-download-game-hack In PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/pokemon-go-free-zekrom_GM1094591345.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/robux-free-account_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-kick-in-free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/is-tiktok-free-on-iphone_GM835599320.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/robux-premium_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/hack-the-streets-roblox_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://collectionsuncovered.com/media/storage/editor/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
font_00_sfnt_off000035f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F9 22964 bytes
SHA-256: 66622a3b6b1fb7c5c24cab621e3eb9a38592c4c25e77ef38eb2e27180b93326a
font_01_sfnt_off00006903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6903 18744 bytes
SHA-256: e04c8dad389fa8ddb6e9166dcfd52ae6ae64cc707c2c66a8db2dd3b8bc072aff

Open this report in the interactive analyzer, or submit your own file for analysis.