Malicious PDF — malware analysis report

Static analysis result for SHA-256 719b993b0efd94a5…

MALICIOUS

PDF

42.7 KB Created: 2021-05-17 02:35:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c4174278e503ec23c1f176fd5091c8b4 SHA-1: 6398a22b40c9603802d71f2d4dcdacd0edb33980 SHA-256: 719b993b0efd94a5139a1e2dec93a91c37264904704f304929f5ce4a237692bd
62 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a prominent lure for free in-game currency, suggesting a phishing or scam attempt. The presence of a callback lure further supports a phishing or tech-support scam pretext. The ML classifier also strongly flagged this PDF as malicious.

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/free-coins-and-spins-for-coin-master-game-game-hack
    • http://sgsacall.sgsa.gov.mn/files/editor/files/roblox-apk-hack_GM431946152.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/coin-master-download-hack-ios_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/coin-master-hack-2021_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/how-to-make-a-free-minecraft-account_GM479516143.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/free-robux-hack_GM431946152.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/free-robux-generator-2021_GM431946152.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/all-coin-master-spin-link-and-free-download_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/free-spin-coin-master-2021_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/coin-master-hack-tool-without-verification_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/coin-master-hack-co_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/flip-master-free-coins_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/free-minecraft-hacks_GM479516143.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/coin-master-free-attack_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/coin-master-hack-spin-generator-tool_GM406889139.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/free-robux-websites-2021_GM431946152.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/free-robux-websites-that-actually-work_GM431946152.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/rbx-free_GM431946152.pdf
    • http://sgsacall.sgsa.gov.mn/files/editor/files/hack-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000498a.bin
16176d59b69409045c140196945d63aa60d297c16e04fabe70428a1d74fa6d43
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x498A 26472 bytes
font_01_sfnt_off0000849e.bin
2c95db8d02702652075be8f6568e083e0c31fb28563b2fbbcaccc1dd0c48c672
pdf-font-stream PDF embedded font (sfnt) at offset 0x849E 18320 bytes