Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d49244fee74ca20…

MALICIOUS

PDF

37.4 KB Created: 2021-05-25 06:32:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d5ac37f07f438653479ca9ac5cb41358 SHA-1: 75bf145cff85800551adb7f28fb8763e98b15e3f SHA-256: 8d49244fee74ca20bd21eac74064a408bcdb844e0132d654602cbfe297b53869
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting a 'Coin Master Free Daily Spins Game Hack'. The document body and heuristics indicate a lure to a generator site, which is a common tactic for phishing or malware distribution. The embedded URLs are designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/haktuts-coin-master-free-daily-spins-game-hack In PDF document text
    • http://thomas-hartl.at/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/robux-codes_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-get-free-robux-without-verification-or-surveys_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_002_off00003526.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3526 25268 bytes
SHA-256: e38bfd0d363cd068564dd1661103f0562e2880ba82b2dc2abbb2c30ecdd6a724
font_01_sfnt_off00006cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFB 19692 bytes
SHA-256: 07da5f82a2a5e6da23cd6f001a7f65bc297aa89522f249aec44c9294260b6e5e

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