Malicious PDF — malware analysis report

Static analysis result for SHA-256 a39e65ecea8aabb5…

MALICIOUS

PDF

41.1 KB Created: 2021-05-18 01:37:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 700fb6fe31d81b18c3c9b47b2706f79d SHA-1: 8e0831e5c06878ab49ac21792bf933e1610a937c SHA-256: a39e65ecea8aabb5302f11ed23db8ed0941f6e7f43d9d2fa64c05a1cecd0574a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains lures for game hacks and free currency, directly linking to external URLs that likely host malicious payloads. The presence of a 'secret recovery' lure heuristic further indicates a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a potential for JavaScript execution (T1059.007) to facilitate the download of further malicious content, aligning with a spearphishing attachment (T1566.001) attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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-hack-2021-free-game-hack PDF link annotation
    • https://ogm-goettingen.de/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/can-i-have-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-free-robux_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://ogm-goettingen.de/images/free-robux-android_GM431946152.pdfIn PDF document text
    • https://ogm-goettingen.de/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://ogm-goettingen.de/images/how-to-hack-roblox-for-robux_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_off00004584.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4584 25744 bytes
SHA-256: 0db78e8103694469bd4f9b6eaf4d0ad03b1723525ca8c8d81c473602960476bd
font_01_sfnt_off00007e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E57 18284 bytes
SHA-256: 24548c4fb8e2ba96ea34c2ab549c5298a51cd3d4936d0c2ae8965e87a81b14d2

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