Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc01c3a2724d44d9…

MALICIOUS

PDF

35.5 KB Created: 2021-05-24 02:11:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fef25d65d8646156416e992a108aa4cd SHA-1: b7a62d41877377e603c26c2d0f41fdaf8a177b9c SHA-256: bc01c3a2724d44d9499114f2c98793d44a4008797394e3037154181f8cc62705
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically advertising free TikTok followers and game hacks. The ML classifier also flagged the PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/835599320/get-free-tiktok-followers-game-hack In PDF document text
    • http://bf-sozidanie.ru/images/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000031de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31DE 24700 bytes
SHA-256: a4a87ef12d32ef7924ee80333815ab47dbcb67534f7edc2723d51a7dd96119cb
font_01_sfnt_off00006afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFD 17692 bytes
SHA-256: 02c3cedea4a2807b323b614e41e6797ad921ddb65350057b59541dca36dbbb9a

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