Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ba9cb50a8ec447…

MALICIOUS

PDF

45.6 KB Created: 2021-05-01 13:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b79b01c55eb06100d4065e7834abbbdf SHA-1: 2e182e166e69b6a53ad91cec676c92041c5fc256 SHA-256: 79ba9cb50a8ec447134b3c116561983292a7f9f87ff9759dec173c59c204bfb2
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and document body text that explicitly mention 'free Robux' and 'hacks', combined with a 'Click here to download' call to action. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms that at least one of the embedded URLs points to known malicious infrastructure. This suggests the document is designed as a lure for a scam or to deliver a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9814

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/fhow-to-ge-free-robux-no-scam.com-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-chat-commands-hack.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/hacks-in-jailbreak-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-put-cheats-into-big-paintball-on-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-without-verification-or-survey.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-dbo-stat-hack.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coolest-free-roblox-items.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-no-survey-2021.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-was-hacked.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/completely-black-pants-roblox-free.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-pizzeria-roleplay-remastered-roblox.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_off00004219.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4219 28052 bytes
SHA-256: 8451498d123adf1fd42b8dc5986045f73bfdb81777933eddb6ba6f06c134f58b
font_01_sfnt_off00008212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8212 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB9 18900 bytes
SHA-256: 169f107b6832ba9ced5b033ee0163f385c514b520fc299d3599c743a202d0898

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