Malicious PDF — malware analysis report

Static analysis result for SHA-256 38edbe24a913a0c9…

MALICIOUS

PDF

46.2 KB Created: 2021-05-19 08:53:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 807b252f252b0b8fd5d3e6e4f996b270 SHA-1: 728192a14ce74d8d743402b3c3bf43736a93b2ea SHA-256: 38edbe24a913a0c9fcb2e47365b16183c6d53d40441a8591029c18dc98fe9838
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a call-to-action lure related to free Robux, indicating a phishing or scam attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that at least one of the embedded URLs points to known malicious redirector infrastructure. While no scripts were explicitly extracted, the nature of the lure and the malicious links suggest an attempt to redirect the user to a site that likely hosts a secondary payload or further phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 3

  • 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/431946152/robux-match.com-free-robux-game-hack In PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-pe_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/pokemon-go-free-zekrom-counters_GM1094591345.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EA 26936 bytes
SHA-256: 5bb40b31d7f9d259162fc26214d76fb48da3e3a3ed49abe8ece89d60e8f6952c
font_01_sfnt_off0000865d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x865D 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000900e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900E 18904 bytes
SHA-256: 4a85ad6ffc73ad9b3f41fceca22de32e3ce7595015d69f53ae753139e52ac9f7

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