Malicious PDF — malware analysis report

Static analysis result for SHA-256 19861bc31181c4cb…

MALICIOUS

PDF

35.1 KB Created: 2021-07-04 01:13:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4100c8f91f10097b1274113e70cef866 SHA-1: 9484282b43c5f1329ee649f71e4e207fc44f57a0 SHA-256: 19861bc31181c4cb4edd111928d5312911a7dfda4b0ab912061ae8b8e41f6f5e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary lure pointing to a 'game hack' website. This suggests a social engineering tactic to trick users into visiting a potentially malicious site. While no scripts were extracted, the PDF structure and embedded links strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/is-coin-master-hacks-safe-game-hack PDF link annotation
    • http://perpustakaan.stikim.ac.id/slims/repository/wurst-112_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-free-robux-no-skams_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/pokemon-go-free-license-key_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-hack-roblox-to-get-free-money-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/april-2021-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-codes-2021-mai_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/how-to-throw-walls-in-roblox-ith-cheat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/roblox-the-cheat-mac_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/hacker-suit-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikim.ac.id/slims/repository/free-robux-games-that-actually-work-2021_GM431946152.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
font_00_sfnt_off00003391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3391 23036 bytes
SHA-256: dec118ade6a62a8cb20b5c966b377de4d6da2edae4248f8dd3f08a99de128240
font_01_sfnt_off0000673c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x673C 18004 bytes
SHA-256: a807d1625683e97b551ec15cde342714fac857768296158707709b617539b003

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