Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc8f7f13b1d436cb…

MALICIOUS

PDF

46.5 KB Created: 2021-05-23 10:36:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 30ce70dd6b7e19d2c6ada30e98437aec SHA-1: 2276822d6c9ab9fac94a0388a61df6970eed9336 SHA-256: bc8f7f13b1d436cb978ac429e2bf7c3c55dfbc747196b313ddf631c98f2bbf15
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free Minecraft account and password generator' which links to a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a potentially malicious site, likely for credential harvesting or further malware delivery. The ML classifier also flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7710

Heuristics 4

  • 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.
  • 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/479516143/free-minecraft-account-and-password-game-hack PDF link annotation
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-limiteds-roblox_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_off0000357f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x357F 24056 bytes
SHA-256: f0180d08919f7c230752797b6506f37682b413a4c8205e9b2da729e4cd5cb5ce
font_01_sfnt_off00006c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C59 7972 bytes
SHA-256: eaa1b4224a6962b9f6f86352b99971468550f59a685feb8f2aa8fc0bcc1dc5ce
font_02_sfnt_off000085a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A7 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off00009434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9434 18344 bytes
SHA-256: 071cc331fbe0dfc1a6c0e7c1f1383f87707aabc4deba919dc9b38235f2b9b975

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