Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea34ebe902fc6d32…

MALICIOUS

PDF

33.8 KB Created: 2021-07-19 07:33:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e5838a502fb3712380b5b0fd3149dfca SHA-1: 2ef8eba9ee52ef475ce7a33f30b8790eaf3d7a5c SHA-256: ea34ebe902fc6d328aac2e053e08da13e71012c793f48e3b7aaffa6d70e63a1e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as a "Coin Master Free Spins Promo Code" generator. The heuristic firings indicate that the PDF is designed to lure users to this malicious infrastructure. While no scripts were directly extracted, the nature of the lure suggests an attempt to download a secondary payload or redirect to a phishing page.

Machine Learning

  • Nyx PDF Classifier clean score 0.0153

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 http://netcdn.tw/app/406889139/coin-master-free-spins-promo-code-game-hack In PDF document text
    • https://sitecontabil.com.br/ckfinder/userfiles/files/free-robux-link_GM431946152.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
font_00_sfnt_off0000241e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x241E 23032 bytes
SHA-256: dd101c15661ddbc45ed35485df37b8131861a6a20a42f0c045be1a050dd12346
font_01_sfnt_off000057b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B4 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off000061c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C3 18476 bytes
SHA-256: dc3ef91c42b56b19e880a129857b9cc4209ff723fc15082788877c1745c42c0a

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