Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bfb2f28583dd8f7…

MALICIOUS

PDF

37.8 KB Created: 2021-05-21 00:08:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fe0371f98a09f6e7b9e1ae7638ecf589 SHA-1: db953ad69c5666cd228cd1fc6b936c395fb027c3 SHA-256: 1bfb2f28583dd8f773a206f2c9e77b594ade92268f308e02e009bde3f0975c68
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/free-robux-games-game-hack PDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfPDF link annotation
    • http://103.68.2.77/__statics/gudangsoal/files/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/pubg-uc-code-redeem_GM1330123889.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://103.68.2.77/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000030d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30D7 28232 bytes
SHA-256: 5b1b2857a679fc1d7265cff1d0a49df7ca6df2802203cc0a10522bf125700632
font_01_sfnt_off000071df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DF 18500 bytes
SHA-256: 50954281d46d1092d2c36c5fba9e04257001c8c7e5b0c8732206987489559ecb

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