Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5918abec1154e6d…

MALICIOUS

PDF

39.9 KB Created: 2021-05-22 00:05:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 39010a9001f051e1aefb56cf527a6aaf SHA-1: 12b1090935d94aa704d1ee2f38776c5ec1d258b3 SHA-256: e5918abec1154e6d49169f756048b5ab5c735193d8239d73432f821c422d6754
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free spins. The document body and embedded links strongly suggest a phishing or scam attempt designed to lead users to malicious websites. No scripts were extracted, but the presence of malicious links indicates a high likelihood of further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/how-can-i-get-free-spins-on-coin-master-game-hack In PDF document text
    • http://dopheide.be/images/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-no-download-app-but-play-for-free_GM406889139.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_002_off00003587.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3587 24820 bytes
SHA-256: a9d781004aa5528d65ddb68b760cf7da864a6e82b3e6de4b3d53f6dc676628fa
font_01_sfnt_off00006e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E96 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00007b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1C 18052 bytes
SHA-256: f4ab70c7a1b321e89283bf56011259b2481f340c7b70b557de06403c5562b8cd

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