Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f44d0ad090fbc7e…

MALICIOUS

PDF

41.7 KB Created: 2021-05-14 10:16:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a50c17a6bcd3abbc8b69a76eae132e79 SHA-1: 02f1d8a4e4a31aba950862169a7530f34df42040 SHA-256: 1f44d0ad090fbc7ed63f191cc3b5ae7090cbc0a8d90d705dabfc274d5bfef7d5
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs pointing to sites offering game hacks and currency, suggesting a lure to download further malicious content. The ML classifier strongly indicated maliciousness, and the presence of both external URIs and a URI using a raw IP address reinforces this assessment. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/coinmaster-spin-ml-free-game-hack PDF link annotation
    • http://118.174.0.244/UserFiles/File/free-robux-without-doing-anything_GM431946152.pdfPDF link annotation
    • http://118.174.0.244/UserFiles/File/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-free-link-2021_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_003_off000046c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46C2 25484 bytes
SHA-256: 5b87a334bdbfe8d2abe782cf113eed1f16555ee4abba18d603b8f097d179eb19
font_01_sfnt_off000080d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 18220 bytes
SHA-256: 650e8f71a1b9292b8308c8990560b3515b162e3aa2d6bcbd8521e639c6c382b1

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