Malicious PDF — malware analysis report

Static analysis result for SHA-256 941925cb5bae6df5…

MALICIOUS

PDF

46.1 KB Created: 2021-05-10 18:34:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8213851af7a2677e7cfff347fae97857 SHA-1: ae04df0d01a7b239afd7fa8931dfa87156f8a7f7 SHA-256: 941925cb5bae6df5403f037aaf6adfaab3767cbaeceb79d61b4daef642080eac
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple URLs that appear to be lures for in-game currency and cheats, suggesting a phishing or scam campaign. The presence of a download button lure and a callback lure further supports a malicious intent. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9528

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/coin-master-free-coins-and-spins-daily-summary-game-hack PDF link annotation
    • http://lawnn.ru/images/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/earnrobux_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://lawnn.ru/images/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lawnn.ru/images/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a47.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A47 25644 bytes
SHA-256: 5d20d67ef6e8a6c70a2583ef4a307dc53ac387abd7b4d7acb061836095d4bdcd
font_01_sfnt_off0000862a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x862A 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9014 18880 bytes
SHA-256: 80e94ef00212ac5fe4220c165773dd6e8ea516dcb328b8ee80116dae5b806def