Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab962c5ce14bf83…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 05:19:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 84f371a0b0ad067af37d41e388e4de5a SHA-1: 0cf2233d906cc313c5952781878ee8f76380a8df SHA-256: 8ab962c5ce14bf83eef28a419c2e5f8b1fe9b630d2c6c7b14aee366dcd9d7e12
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a clickable link that point to external resources, many of which are hosted on IP addresses and appear to be related to game hacks and cheats. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further malicious content. No scripts were extracted, but the overall pattern suggests a phishing lure for potentially unwanted or malicious applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.tw/app/406889139/free-spin-coin-master-instagram-game-hack PDF link annotation
    • http://183.91.70.7/repository/how-to-get-free-cloth-roblox-2021_GM431946152.pdfPDF link annotation
    • http://183.91.70.7//repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/pastebincom-catalgo-roblox-hack-alternativo_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/roblox-games-to-troll-with-hacks_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/wurst-commands_GM479516143.pdfIn PDF document text
    • http://183.91.70.7//repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/minecraft-items_GM479516143.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://183.91.70.7//repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/roblox-game-free-download_GM431946152.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_off000034bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34BF 22880 bytes
SHA-256: 52bb6a0ccf57d9fa89561e4ccf7c10466cd75ba9e9da89c47c27d87cb00f57c6
font_01_sfnt_off00006808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6808 18432 bytes
SHA-256: 6239b29cefe2ef645b0ddfa2e4a48b335d7d861794539a50a9bab712691d9f2e

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