Malicious PDF — malware analysis report

Static analysis result for SHA-256 b29d311ad64a9d25…

MALICIOUS

PDF

36.9 KB Created: 2021-05-20 14:15:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b8f06baccdde78c6388c34d174c21c8b SHA-1: 8188a7ede722ce886451176efcda9eae840d4c35 SHA-256: b29d311ad64a9d25b9465fc339fe751a08d5aa72cdd84f9978b93fa2e7d52276
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that are identified as malicious redirectors, specifically leading to a 'game hack' lure. The document body text and heuristics indicate a deceptive 'download button' to entice users to click these links. While no scripts were explicitly extracted, the nature of PDF redirects often involves JavaScript to facilitate the malicious redirection.

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/479516143/minecraft-free-download-chromebook-game-hack In PDF document text
    • https://www.taline.hr/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/free-roblox-wings_GM431946152.pdfIn PDF document text
    • https://www.taline.hr/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.taline.hr/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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_off0000334b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x334B 25444 bytes
SHA-256: 2d44363c092eb51fc57184a620343a23fd5ceff32575bf732532f8a2300e670c
font_01_sfnt_off00006cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEE 19044 bytes
SHA-256: 5dd9560c2144c6e0c163b4f028c4225137fae20b1a5cdfb52854f5b1068f3385

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