Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c8419dd26b7e0c…

MALICIOUS

PDF

36.4 KB Created: 2021-05-23 05:43:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 57cf4fc7a1306562b99583ed20428400 SHA-1: 3309ed916369efee48b4ffdd322b977ba66fcc0f SHA-256: c7c8419dd26b7e0c41aecaf0b8c7e3dd333ce1b04326d638d85b4ba70c81f922
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, disguised as game hack generators. The document body explicitly mentions 'Minecraft Build Hacks' and provides a call to action to access a generator. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/minecraft-build-hacks-game-hack In PDF document text
    • http://www.e-lysis.com/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.youtIn 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
font_00_sfnt_off00003413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3413 25144 bytes
SHA-256: 338707e17eabfbcfb1be7e492fe2ad436a4ec3f0d4be7fb209d11cf51dfd3d5e
font_01_sfnt_off00006cfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFA 18344 bytes
SHA-256: 504dc7aae18f41d03fb81a40dc2b00347564f3d62703eefd30bc8cf15d610b16

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