Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6057956460d2744…

MALICIOUS

PDF

33.9 KB Created: 2021-07-10 03:02:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5e2292b04546eeb5b531b8aa1fc298b9 SHA-1: a20c676307d3da1948adb48c07bb2e5f124d4876 SHA-256: b6057956460d27447eb360553df6f7ad3ea2084d679835482f9ca1f51e4ef92d
62 Risk Score

Malware Insights

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

The document contains embedded URLs and text that lure users into downloading applications by promising in-game rewards for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and callback lures further supports a malicious intent. The primary goal appears to be tricking users into downloading a second-stage payload disguised as a game hack or cheat.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-role-in-coin-master-game-hack
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/robloxbux-us-generator_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-madcity-niveau-100-cheat_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-prison-life-334-hack-download_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-spins-gratis_GM406889139.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-card-codes-deutsch_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-apoc-rising-hack-2021_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-free-100-spin_GM406889139.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/pubg-uc-ykleme-bedava_GM1330123889.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/urban-420-network-how-to-get-free-robux_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-no-verify-2021_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-levels_GM406889139.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/coin-master-free-spins-hack-apk-download_GM406889139.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/minecraft-bedrock-server-hosting-free_GM479516143.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-spins-coin-master-daily_GM406889139.pdf
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-inmortal-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002df7.bin
13a74ef6032a3696ec9303e3b92d8b9b1bd9c9ba1c6dd4f19cfe40bbfa6593e1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DF7 23348 bytes
font_01_sfnt_off000062ae.bin
b51d2cd8f3a2b2ab778bd1d4ef698f8fe12f93fad8d5b53ad600fdb8a6c5eb0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62AE 18072 bytes

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