Malicious PDF — malware analysis report

Static analysis result for SHA-256 c85442c07b08f699…

MALICIOUS

PDF

43.4 KB Created: 2021-06-04 01:52:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1026a9370027edb012ae4a1d122b87cf SHA-1: abfeda7a446b23e72e845bf8b4bfcc4a0b97170d SHA-256: c85442c07b08f699e0c9dcd503e582674c4782873a366897e131544b28937cec
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous links, identified as a link farm, that redirect to websites promising game hacks and free in-game items. The primary lure is for 'Coin Master' related cheats. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-free-link-daily-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hack-roblox-players_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
stream_004_off00004ff6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF6 24076 bytes
SHA-256: c9705e4ba84dc192b1706c3600ee33ec742099f8318502c2bd85c5073b9bd306
font_01_sfnt_off00008710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8710 18304 bytes
SHA-256: d4d3f57bf8cf1b361744efde21cb2de148eed87c90371e8e56e2c4a81fe787c2

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