Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ac3027b8b2c836c…

MALICIOUS

PDF

43.9 KB Created: 2021-04-22 21:02:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 18dd43eee57dfe4c8f8bd8a5340bd5f7 SHA-1: 7b4db1ead0509048ccff15f6eddac312f8855dde SHA-256: 6ac3027b8b2c836c0f484007743a53295f8d9b37bf9eaa0f59ded68eda7202be
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a game hack generator, which is a common social engineering tactic. The link directs to a suspicious domain, and other embedded PDFs on a similar domain suggest a pattern of hosting malicious content. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9065

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.
  • 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://netsecure.pro/app/431946152/easy-robux-hack-on-phone-game-hack PDF link annotation
    • https://emindonesia.com/assets/CKImages/files/get-robux-free-button-script.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/free-robux-20219.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/roblox-server-crash-hack.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/best-star-wars-maps-free-modeled-roblox.pdfIn 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_off00003bdf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3BDF 30468 bytes
SHA-256: ce958b011122714ac84065d63e8719482601934e6339788f98d5162af82edabc
font_01_sfnt_off00007f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F30 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000088e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E1 18748 bytes
SHA-256: 158d5a7cbdcb0df167ba40b346e35fd41e83df8b36ed0f35fae6cc00ae5e0884

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