Malicious PDF — malware analysis report

Static analysis result for SHA-256 06898ad554cc0bbe…

MALICIOUS

PDF

38.9 KB Created: 2021-05-12 07:40:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f9df9178bf073326a54034f3b29c2ac3 SHA-1: 4cb8b19232d24b2577602be5a046105f6f5cfb5f SHA-256: 06898ad554cc0bbe62cdeda3656bcc1a67ceca495e77003d5796a69868dc92ba
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1204.001 User Execution: Malicious Link

The PDF document contains a prominent link disguised as a 'Free Minecraft Website' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', which redirects to malicious infrastructure. It also instructs the user to press Win+R or paste a command into a terminal, a tactic consistent with ClickFix attacks designed to bypass macro restrictions. The embedded URL and the social engineering lure indicate a phishing attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/free-minecraft-website-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003547.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3547 24884 bytes
SHA-256: 3465355efdddb97ba24e4967f0d1777d9e7b9235d5f492804a67550bc2b7d410
font_01_sfnt_off00006dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFF 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off000077a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A6 17924 bytes
SHA-256: ff8b7dbb958b2e21889f0de65becea477e8c4948e76fdf7eea045243f3f10d1a

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