Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7074a38675853d9…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 03:34:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 44314ab2157f0516dab9338d11463009 SHA-1: b2c0e8855f5db544179c844de7c0c520f370a0cd SHA-256: e7074a38675853d9d5cedc0ffd06b0ca09bfe9a73c35d7c0bdb558867c14bc35
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free game hacks' to entice users into clicking external links. The PDF_GAME_HACK_REDIRECT_LURE heuristic and the numerous external links pointing to game-related hacks indicate a phishing or scam attempt. The ML_NYX_PDF_MALICIOUS flag further supports the malicious nature of the file, likely serving as a gateway to malicious websites or further malware 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.tw/app/479516143/minecraft-pocket-edition-free-apk-game-hack PDF link annotation
    • http://library.stikessuakainsan.ac.id//repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-pants-template-download-free_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-animation-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-hack-into-your-old-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/robux-free-deutsch_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/bird-set-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/create-an-audio-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/script-for-steves-one-piece-roblox-hack-max-stats_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/easy-steps-on-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/find-hacked-roblox-account-back_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-money-on-lumber-tycoon-2-roblox_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/cool-roblox-costumes-free_GM431946152.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_off0000333c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333C 22468 bytes
SHA-256: 786fcf7093f35967579e1e761fa0277cf52cf166cb674b39bce49f2a66c66a39
font_01_sfnt_off000064f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F8 18672 bytes
SHA-256: 3e2f23e0331418b6b8b756e9ab8a4e4cea054b51d170e767955415f920785c5a

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