Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2e7e5e0c908d70…

MALICIOUS

PDF

37.8 KB Created: 2021-05-15 05:05:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a0c24dbfc3cdd48c0c5b062bc81bc047 SHA-1: caf3e36da75f372daebb8eae31123e47abc56e9d SHA-256: 1e2e7e5e0c908d70fb29cbd6a79913792c16af5939fda9852a994c069c2a8b2f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Coin Master Hack" and a prominent call-to-action button. It embeds a URL that is flagged as a malicious redirector, indicating an attempt to lead the user to a harmful site. No scripts were extracted, but the presence of malicious links and lures suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/coin-master-hack-apk-free-download-game-hack In 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_003_off0000375d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x375D 25720 bytes
SHA-256: 1958a2641e35aea2022594d1954d611d7b1a4e4cdcb4d79a438d615cd5a19c82
font_01_sfnt_off000071a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A8 18636 bytes
SHA-256: 9aef5eba1b944da03ad0d0211b0df86da0d90e0cf099764a6ba9c9a2ed29eb67

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