Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac62572030c2e85…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 06:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6d26a31b9760f55b7322b1c9b3688157 SHA-1: 86ca80a5047c00fac28e24d4048f849e40cd2418 SHA-256: fac62572030c2e8522db37a6a31e31c2bf4be9e64a763dbc49359b638f5d6c57
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and in-game currency generators. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users with deceptive content and directing them to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/mcpe-master-hack-unlimited-coins-apk-game-hack In PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-hack-us_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
stream_003_off00004b81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B81 24772 bytes
SHA-256: a435eb5ecbc425359c1c1bbabfc3f0c32a8b8b1a1c66eb5d0c0d6d90ab043b06
font_01_sfnt_off0000842d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842D 18584 bytes
SHA-256: f1b230a3282965ca413839eb8e142efd64ad4936c14fd8ecd7bf26ec72144289

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