Malicious PDF — malware analysis report

Static analysis result for SHA-256 d068cd2c17530927…

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 18:07:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f0669ef040ce2199e5b99de09f770931 SHA-1: 57df023e59b3dd0a024466aa3d535603454f329b SHA-256: d068cd2c17530927791ff3d4cb44c4b6333a918f1de2788158a9e94b74b3cf80
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/free-modded-minecraft-server-hosting-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-kick-a-hacker-in-a-server-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-dinosaur-simulator-cheats-dna_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hacking-forums-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/ben-ten-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-use-cheat-engine-on-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/better-trains-jalbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-cheat-on-risky-strats-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hacks-for-framed-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-hack-a-roblox-account-password-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-no-games-needed_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/lucifer-roblox-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/easy-way-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-hacked-com-2021_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_off00002efe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFE 21972 bytes
SHA-256: b228f5764cd2cc3ce8f13ae69d9be5fe1967808911a366c80505ce423f5aaab1
font_01_sfnt_off00005f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5A 18284 bytes
SHA-256: 4ae19380f71872a59bca81a6826a2f1ac99dae3e110f9987d961b4518a9677d8

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