Malicious PDF — malware analysis report

Static analysis result for SHA-256 7961f9284715bca2…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 05:11:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2890459ebbdf29053199fc7f785c2f00 SHA-1: 5551f3448529341f0674ecc17990c549cbb15824 SHA-256: 7961f9284715bca247698054ef741b8eb59c671d4f30c1d1ac6952d2a0130118
142 Risk Score

Malware Insights

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

This PDF contains numerous links, identified as a 'PDF SEO Link Farm', designed to lure users with promises of game hacks and cheats for popular games like Roblox and Coin Master. The primary redirector URL, http://netcdn.co/app/431946152/my-roblox-place-hack-by-game-hack, is a strong indicator of malicious intent. The document's structure and content suggest it is part of a phishing or scam campaign aiming to drive traffic to potentially malicious sites or facilitate unwanted downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/my-roblox-place-hack-by-game-hack PDF link annotation
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-in-roblox-inspect-2021_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/the-fastest-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/hack-para-booga-booga-roblox-2021_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/robux-free-real-2021_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/get-me-robux_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/roblox-free-pets_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/fly-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://kab-bangli.kpu.go.id/new/public/ckfinder/userfiles/files/how-to-hack-sword-fight-on-the-heights-on-roblox_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_off00002eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFF 22400 bytes
SHA-256: 3233eb1072ed99dd3c6416c351e52cc1b6f65ac100d523af552264c3f1f45dd8
font_01_sfnt_off000060fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FA 19184 bytes
SHA-256: 4e610f2d0cf05ce87ddf0cad26b6bd3695ab643a4e974771cd5bc798390cc438

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