Malicious PDF — malware analysis report

Static analysis result for SHA-256 7122cc0d24a54ac5…

MALICIOUS

PDF

33.1 KB Created: 2021-06-27 09:17:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d4e41afe1044b4df2a2a445953368a12 SHA-1: d13bf43125cffa812ecf5ec507dcb026d08ffad1 SHA-256: 7122cc0d24a54ac5ec71430de56576e2075a74d487a496ff9181ca8689608ee1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with a primary link identified as a malicious redirector. The document body and heuristics indicate a lure for game hacks or free generators, aiming to trick users into clicking the malicious URL. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-money-roblox-jailbreak-game-hack In PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/roblox-robux-hack-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/transparent-muscles-roblox-free_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/free-roblox-reddem-cards-live_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/spin-links-for-coin-master_GM406889139.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_off00002b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B96 21468 bytes
SHA-256: 041da129acb1b5a02da024010701fb18bebbe5e06dedb0adeeec576fcc89e116
font_01_sfnt_off00005a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A73 19748 bytes
SHA-256: e6713bd053eb82b5727e65f2266e89a54e48087d06a152ca92e5cec95c06f74a

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