Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0768ecbc95f09f…

MALICIOUS

PDF

41.5 KB Created: 2021-05-11 12:39:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 07e4d94afa13f42f0273b19ea055d760 SHA-1: 6b29d8a063c89063ffebfe623ab189c4901c8b16 SHA-256: fc0768ecbc95f09f327a32e5c354c416ecbd2d40163ef548b64e3f977cad01c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting "game hacks" and "free generators" for popular games. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-blogspot-game-hack. The document body and embedded URLs suggest a social engineering lure to trick users into visiting these sites, likely for further malware delivery or credential harvesting. No scripts were extracted, but the PDF structure and embedded links are sufficient to classify this as a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-blogspot-game-hack In PDF document text
    • http://digilib.iailm.ac.id//repository/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-sued_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46B9 25252 bytes
SHA-256: 6adf792236a61389c621151c38f8838aafef79942bff03f8493830723fea92a2
font_01_sfnt_off00007f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F45 18464 bytes
SHA-256: 3d1506adb004325b5ad849f11167115e1f90dbd1428f7e6d98779d75984a0c30

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