Malicious PDF — malware analysis report

Static analysis result for SHA-256 bada59e78b062876…

MALICIOUS

PDF

43.5 KB Created: 2021-05-10 17:34:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f509f9e03ab232ee7a6f2caf3f2297ac SHA-1: 487219b77c1a6c648228faa6e1cdae14d1ae8c80 SHA-256: bada59e78b0628762516f19f866117f3bb2a154338f719a13ffcd1172400f42b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically targeting users with lures related to game hacks and free currency generators. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an intent to redirect users to malicious websites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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-free-card-link-today-game-hack In PDF document text
    • http://szekelymozes.ro/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-coin_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-spins-promo-code_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_003_off000042e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42E7 25392 bytes
SHA-256: ff35b9afd86cb2d958d3639d2ba54ee14aa1627aa06fd03242f2f3715a39e34e
font_01_sfnt_off00007e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E32 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off000087d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D3 18232 bytes
SHA-256: bb090f263e704b9e364c49221e502887c5f7468e186fb315b70110f66f8504d6

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