Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e35c380fc1d95dc…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 10:14:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bcf1ad2b80fc45c262a8abf1969d2e1e SHA-1: 16164f32f46210e0763051e4d21f9c8094a734da SHA-256: 7e35c380fc1d95dc628c435a1e351a0399451a4b663340909f1d08b838822998
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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 https://netcdn.xyz/app/406889139/http-bit.ly-coin-master-free-2021-spins-game-hack PDF link annotation
    • http://advancedaudiosystems.org/images/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/how-to-hack-coin-master-using-es-filer_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://advancedaudiosystems.org/images/coin-master-free-spins-2021-link_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a62.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A62 26268 bytes
SHA-256: 07b95cb61868c233baba8a630e3458faa2ccec448c6bc88b859455396c4b0f27
font_01_sfnt_off000083a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A9 18824 bytes
SHA-256: 7e3049b9a5a0ae93670f4a3987e867be19f2251f6b8a6c3356ce1f88b75303f6

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