Malicious PDF — malware analysis report

Static analysis result for SHA-256 141bc0f60fe91f74…

MALICIOUS

PDF

49.0 KB Created: 2021-06-04 01:11:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f968583f2f472cbde66cb5fd49ae0dc1 SHA-1: d4b828ebbc7e7541601108e7b349016ce8ebd3c4 SHA-256: 141bc0f60fe91f747a2e9c9b82f7dbc36aa380b90e85c7975d4e5592d999c215
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to websites promising game hacks and free in-game items, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures reinforces this assessment. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • 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.
  • 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.online/app/406889139/how-to-get-free-pet-snacks-in-coin-master-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/easy-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pokemon-go-free-daily-remote-pass_GM1094591345.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pokemon-go-free-poke-coin_GM1094591345.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-android-2021_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000504f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x504F 31700 bytes
SHA-256: d45133235ce57b3755cb2051fd10de9cb569ae3203cd5b5c20ee9dffa3c17041
font_01_sfnt_off00009389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9389 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D3C 18196 bytes
SHA-256: fb13e7b228b7379ac07155c9bb1ef88ba6a2665047d9ab8070bad68869b81d0f

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