Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d39383085fd04bd…

MALICIOUS

PDF

42.0 KB Created: 2021-05-16 17:07:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3f20d08679e58db0349f06bb2bae0c90 SHA-1: 5d25482bc127b6422cc590cb92ded95e0c40b4a3 SHA-256: 2d39383085fd04bdf4e496de902e3864e94a41e4ccb16077750e1ea0fe792c5f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which is likely intended to deliver a secondary payload or lead to further phishing attempts. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

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/free-spins-coin-master-2021-game-hack In PDF document text
    • https://www.sitiwebjoomla.it/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/minecraft-anarchy-server-no-hacks_GM479516143.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/add-robux_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://www.sitiwebjoomla.it/images/how-to-get-free-golden-card-in-coin-master_GM406889139.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_off000047e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E9 25052 bytes
SHA-256: 2d4bab3dd0e0feeea53f4e82bad4874c097660fe2eae27be8ab0e0d364a792a1
font_01_sfnt_off000081c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C9 18288 bytes
SHA-256: 9732707b45c862b7a6ef8ea2418900def9be3650c6b325207d932644f64622ad

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