Malicious PDF — malware analysis report

Static analysis result for SHA-256 badd44a7d8c17732…

MALICIOUS

PDF

44.3 KB Created: 2021-05-10 22:41:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e7292b05ffcf1c0a690a0824f3f4ee52 SHA-1: 353edd8ba6f06c399a16f557091d34250efaed62 SHA-256: badd44a7d8c17732e42228af27e88b14519db1d6a515fb90e1abe3ff3e3d8f7b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and embedded text related to game hacks and free currency, strongly suggesting a lure for users to visit malicious sites. The heuristic firings confirm this, flagging the document as a game hack redirector and a potential callback phishing lure. While no scripts were explicitly extracted, the nature of the lures and embedded URLs indicates a high likelihood of leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-hack-pc-cheat-engine-game-hack PDF link annotation
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/www-robux-redeem_GM431946152.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/robux-best_GM431946152.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.dialadriver.net.au/uploaded_files/userfiles/files/kuso-icu-roblox-hack_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_off00004bb7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB7 26748 bytes
SHA-256: f40c5f7eb04a0583b56f0b8505cf292aff390b51d824275d6a7c90724d656ce2
font_01_sfnt_off00008818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8818 19196 bytes
SHA-256: 2e7010a65577926150f2a9e0ccc997da456333e0f9caf189799b9088219f3abf

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