Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb22ced89ab384f…

MALICIOUS

PDF

37.2 KB Created: 2021-05-21 20:11:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: caf640be8896e3a3e83e65917569753b SHA-1: 2a4e8f33d4850dd1585b7bb2ae3d391ced0a5e71 SHA-256: aeb22ced89ab384ff0409bbc166709bab56371a215185d51cfeeb27a05a4cee5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The heuristic firings indicate a lure for free game hacks and malicious redirector links. The embedded URLs and the document body content strongly suggest a phishing attempt to trick users into visiting malicious sites.

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
    • http://eltisstudio.sk/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://eltisstudio.sk/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-cards_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_off000034ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34AB 25308 bytes
SHA-256: a00690a599a56faeea5413b1a09e0e172b5047994a122e9d538d96190ac4aeb5
font_01_sfnt_off00006e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0E 19044 bytes
SHA-256: 5dd9560c2144c6e0c163b4f028c4225137fae20b1a5cdfb52854f5b1068f3385

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