Malicious PDF — malware analysis report

Static analysis result for SHA-256 8afbda2e4f016db9…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 12:48:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b49ebf3bbd44b1b216505744daa8b59 SHA-1: 869cdccebc5a75906838cb79253efd5401a55e87 SHA-256: 8afbda2e4f016db9c5f8360d9145c15b0a05da570347f894df630891f2a8954a
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary URL, http://netcdn.tw/app/406889139/coin-master-free-cards-hack-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/406889139/coin-master-free-cards-hack-game-hack In PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/comment-hacker-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-reddit_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-roblox-galaxy-makeup_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-hack-roblox-account-cookie_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-dbz-hack_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-insta-arrest-hack-jailbreak-pastespin_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_002_off000032da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DA 23032 bytes
SHA-256: 53dfef250662ba17e964ab2b825355ff2595ed93b47b54aa2bb3474ee74d01ce
font_01_sfnt_off000066b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 18340 bytes
SHA-256: 46bbcb93cdf3c0d295b315ab7e658e4bf46b20485efcdd5d2b69d88a805ee664

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