Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d737cc771c31d69…

MALICIOUS

PDF

38.3 KB Created: 2021-05-25 07:32:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fa44994db70c03e54b6eb33e7756084e SHA-1: 4e70b9c267439e414cad28b2c202c9b4413ffb13 SHA-256: 6d737cc771c31d69e6af022082c80be6bcfca3b476d2bb685d8587505177816f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link that points to an IP address, indicating an attempt to direct users to a harmful website. The document body and embedded artifacts suggest a lure related to free Robux or game hacks, which is a common phishing tactic. The presence of a download button heuristic further supports the malicious intent of tricking users into clicking through.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

Heuristics 4

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/robuxlove-.net-free-robux-game-hack In PDF document text
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfPDF link annotation
    • http://103.30.145.97/__statics/gudangsoal/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn 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
stream_002_off00003639.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3639 28680 bytes
SHA-256: ab881195c243c5126c4ff159dec351070bbe93ef72c915d28676c00bb1bc1dcf
font_01_sfnt_off0000742b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 18372 bytes
SHA-256: 65db4e182113fd1a8aa6d8046ef53f92d54fa7b6a505b130f920b75136a01eb1

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