Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc647aa405416693…

MALICIOUS

PDF

47.7 KB Created: 2021-06-03 04:49:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 692d813919a76bf76f99ff5ed5823d62 SHA-1: 63cd4acdc9874a382088705c795caf433ad20f40 SHA-256: fc647aa405416693d340b9f39a6012ee31a6a8b6fcb284c6e76d281ba251e9c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically advertising game hacks and free item generators. The primary lure URL is https://netcdn.online/app/406889139/how-to-get-free-food-for-foxy-in-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.online/app/406889139/how-to-get-free-food-for-foxy-in-coin-master-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/pokemon-go-free-2021_GM1094591345.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/install-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-coin-link_GM406889139.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_004_off0000522c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x522C 31984 bytes
SHA-256: b75b75ee96a4dcb87e170c8c1c0b03df9cc327587139e89abdc5aa4ffe522e96
font_01_sfnt_off00009787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9787 18440 bytes
SHA-256: a2fd22afb07b2ab97191ea58f041a8e540c79d47e96b45ccd375a5553ae49956

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