Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6dad03a41622b9…

MALICIOUS

PDF

49.9 KB Created: 2021-05-23 10:23:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: c9177496ba8d2d52a927d2f85fc36898 SHA-1: 1e68a46dc4fbe849aea867637c80c1398950c551 SHA-256: ce6dad03a41622b93607d43b39f0f534011adb13ec9e315540e9b9477c1ec363
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and free spins. The document body also contains a call-to-action phrase, suggesting a phishing or scam attempt. The primary goal appears to be directing the user to a malicious site via a deceptive lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3298

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.
  • 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.
  • 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/406889139/free-spins-coin-master-unlimited-game-hack In PDF document text
    • https://www.fishboat.hr/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/win-free-robux_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35CB 25772 bytes
SHA-256: b74fc9d01151633a25ceb801ea5ab293e1f52faadb60f372737442dac8063745
font_01_sfnt_off0000718f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718F 3872 bytes
SHA-256: a3c0efeccefd97c280011641d5dc31aa69c26891d378ab66323afbf3c86890fe
font_02_sfnt_off00007f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2C 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off00009252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9252 18580 bytes
SHA-256: 8aad0f2405ec9a3272b05944b48a23572f7af0293916013bea6eee8874d320e7
font_04_sfnt_off0000b515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB515 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0