Malicious PDF — malware analysis report

Static analysis result for SHA-256 194481ac8656e00c…

MALICIOUS

PDF

48.6 KB Created: 2021-05-24 07:12:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 174db988dce16bc193cb2777a853c86e SHA-1: 762c420690f0e8738c78c6c48f4a2d0744a0a25e SHA-256: 194481ac8656e00c473521a786204b909584f12cbeb348869e2b99510c05b3c9
200 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors, including one disguised as a "free Minecraft account game hack" generator. It also includes a heuristic indicating a lure to execute commands via clipboard manipulation. The document body and embedded links suggest a social engineering attempt to trick users into visiting malicious sites or potentially executing further commands.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8454

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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-account-game-hack In PDF document text
    • http://swibome.nl/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://swibome.nl/images/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://swibome.nl/images/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://swibome.nl/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://swibome.nl/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3409 29572 bytes
SHA-256: 02f3cfa5ddbbe55fc9647410963e99483eaefc582069a3d327a74640756de785
font_01_sfnt_off00007670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off00008f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F99 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off00009e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E25 17848 bytes
SHA-256: 6e6a79a2e8d921ce4110ee7bea64574f9639f41d67ba7d7747bc91dcd849eff6