Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e53228cfa2c27f5…

MALICIOUS

PDF

36.2 KB Created: 2021-06-27 05:55:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c29db99e02b3cb88aee851020f04c09b SHA-1: 2123c7bc67b6c98aa94d358948c2dd677f02f203 SHA-256: 1e53228cfa2c27f57f25e3f6a2cfe95c2c9151db96adc632be776e70c6e1ddba
142 Risk Score

Malware Insights

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

This PDF document contains numerous links disguised as game hacks and generators for popular games like Roblox and Coin Master. The primary heuristic indicates a 'PDF SEO Link Farm' and 'Game Hack Redirect Lure', suggesting the document's purpose is to drive traffic to malicious websites. The embedded URLs likely lead to malware downloads or phishing pages.

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/jailbreak-roblox-hack-download-2021-game-hack PDF link annotation
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-build-a-boat-for-treasure-venom-cheats_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-aimbot-hack-2021-august_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/roblox-game-play-online-for-free_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-ids-for-free-spins_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/hacks-de-roblox-para-jailbreak_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-no-waiting-now_GM431946152.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://puskesmasdenbar2.denpasarkota.go.id/new/public/ckfinder/userfiles/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3384 22604 bytes
SHA-256: 9e9430c498603dd274a5f249b47b9a30f4b7e6995a1847cff10fa89babd12f2e
font_01_sfnt_off00006607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6607 19852 bytes
SHA-256: 1bce85ee50931418c93feb1a1cfcb7430c7900f9f35c4bb7a53c303447a34dc1

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