Malicious PDF — malware analysis report

Static analysis result for SHA-256 492b7e243805a3b4…

MALICIOUS

PDF

38.6 KB Created: 2021-05-22 19:10:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 20a0f32e366ba2abd55d302ce7ba8aab SHA-1: 51387c7790d37a430d88706416041675a6caec8e SHA-256: 492b7e243805a3b49cb50bbf7a9b0349d21eca6c425ab9e9489485d232e52d6c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The document body explicitly mentions 'Free Tiktok Likes' and 'CLICK HERE TO ACCESS TIKTOK GENERATOR', reinforcing the social engineering aspect. The embedded URLs are designed to lead the user to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/free-tiktok-likes-game-hack In PDF document text
    • http://www.access-coiffure-tours.fr/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://www.access-coiffure-tours.fr/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000319f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x319F 25672 bytes
SHA-256: 81b4919ee68ce126a451c15524c05ce2004f9bb6ac63b1f324a24fbb69e184a7
font_01_sfnt_off00006dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC8 2892 bytes
SHA-256: 5e0712ca08337fb3b2e5736ec787a8b2ab1b9b6f3706f0b029d23afe08e6a7a6
font_02_sfnt_off000077ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AD 17456 bytes
SHA-256: 90aab8e20699190043af8c1921cf798ffa728f6e874bf4804f87169ad62e4652

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