Malicious PDF — malware analysis report

Static analysis result for SHA-256 42a686f1206e06d8…

MALICIOUS

PDF

35.5 KB Created: 2021-07-01 23:46:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 08f251223d051681576bd03455df42f6 SHA-1: be468c6df74b3b794ad8289bc47cb77c9ed86346 SHA-256: 42a686f1206e06d812b0736355fa97e3a3815cbd2b4b3b8d6dc98368cf992b39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a lure of game hacks and free currency to entice users to click on links. The primary link directs to a known malicious redirector, which likely serves further malicious content or leads to phishing pages. The document's structure and embedded URLs suggest a social engineering attack aimed at tricking users into downloading potentially harmful files or visiting malicious websites.

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.co/app/431946152/slurp-hack-roblox-jailbreak-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-swear-words_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-legends-of-speed-hack-pain-exist-descargar_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/shirt-creator-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hacks-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/speed-hack-roblox-app_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/give-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-meep-city-how-to-get-free-coins_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-spin-wheel-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-make-an-account-on-roblox-laptop-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-150-robux-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-generator-2021-no-survey_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_off000032fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32FD 22556 bytes
SHA-256: 6191fcbc9e7c8b9be50885108ae8138ebabc2ffc2986c8af39fdeb0f99ffe1ef
font_01_sfnt_off00006517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6517 19260 bytes
SHA-256: 54c03feb4a3c2f8a1172f0855d3d2148b093478f60bba1fad6d653d2ac3376e7

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