Malicious PDF — malware analysis report

Static analysis result for SHA-256 73efeac6f2aa4e09…

MALICIOUS

PDF

42.0 KB Created: 2021-05-21 17:52:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 023d550c97e1c1508772a2f0fffbd384 SHA-1: d93b9f3d3e7dedb4a64d4927b444376af97f02ce SHA-256: 73efeac6f2aa4e091461d33255fd3854d305432d034e8c5526655d8900e94eb7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game items. The document body and embedded links strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7466

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/431946152/free-roblox-cards-pin-number-game-hack In PDF document text
    • http://svadba-moda.kg/images/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-tiktok-fans-app_GM835599320.pdfIn PDF document text
    • http://svadba-moda.kg/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003532.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3532 28700 bytes
SHA-256: d689177b78defd4884658e98647ae332bcb4f30b74e7dee5ce0067bc55a8eb91
font_01_sfnt_off000076fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FA 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000080e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E5 19024 bytes
SHA-256: d202742233b17ada8e60ef392bbe1d59108b00a04bd9cee781b4229daa03d739

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