Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96b08e1390a1657…

MALICIOUS

PDF

44.2 KB Created: 2021-05-16 17:03:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dd68341baacdb1125dbf17a7ed846500 SHA-1: 66bdcae20fc935da10fc2efcd4fdcc3beba8e135 SHA-256: b96b08e1390a165734017a6edc80f87ae9c931b2092ed917fd0c473b4e8a4464
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that promise free in-game currency or hacks for popular games, indicating a lure for users to click through. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and callback lures further supports a malicious intent. The document likely serves as a phishing or malware distribution vector, attempting to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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/431946152/info-roblox-com-robux-game-hack PDF link annotation
    • http://bildhauerei-roerig.de/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/roblox-generator_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/getrobux-now_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_003_off00004bea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEA 26644 bytes
SHA-256: 7012460979e4354401034705aa682e15ad49392890e72429550b610892995604
font_01_sfnt_off000087da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DA 19092 bytes
SHA-256: df3ef1d06c9dce64a56dbd0ca91e8cfd03bfcdc30d2d8e964ab2ac039f16d703

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