Malicious PDF — malware analysis report

Static analysis result for SHA-256 790496a5db6114c9…

MALICIOUS

PDF

32.3 KB Created: 2021-07-20 06:47:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f875756a16bf94d0df11056fd39738d5 SHA-1: 6480ee41f4140fe656ed565c2a915d8895caaf1f SHA-256: 790496a5db6114c95b3cb26d4ba545292d3f566e410c44e01b8e8fa636f027d6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "game hacks" or "generators" to lure users. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the embedded URLs and the nature of the lures suggest a malicious intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/roblox-speed-hack-game-hack In PDF document text
    • http://ivpr.net/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • http://ivpr.net/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/how-to-get-free-robux-without-verification_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
font_00_sfnt_off0000289a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x289A 22512 bytes
SHA-256: 691ec3cbd81484ccc7676a166220680797c78b6370049f2ad9129157ff643c46
font_01_sfnt_off00005aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA2 18716 bytes
SHA-256: 25137fd7aa4ae55fccfc2bf95df03fd14249c0cb6961e1d1bb22478a3866a6f2

Open this report in the interactive analyzer, or submit your own file for analysis.