Malicious PDF — malware analysis report

Static analysis result for SHA-256 d71af2fbfedea69b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-02 04:49:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: efde1c992804c63b30c63714ab0b0184 SHA-1: 093cf0cf8d6a4d395ed1d33fbf1c61dcfcae4d0b SHA-256: d71af2fbfedea69bfead0c20c3494373e4677634025c7fba8d22ece14c8dae26
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document acts as a lure, presenting itself as a generator or hack for popular games like Roblox and PUBG. It contains numerous links to external sites, including a known malicious redirector at http://netcdn.co/app/431946152/roblox-pants-free-game-hack, which likely serves as a gateway to further malicious content or downloads. The document's structure and embedded URLs indicate a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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.
  • 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/roblox-pants-free-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-suits-from-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/pubg-uc-price-in-bd_GM1330123889.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/bux-city-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-clothes-no-robux-of-friends_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-unused-roblox-codes_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-valentines-cards_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-any-roblox-account-using-windows-command-prompt_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-fedora-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-acc-hacken_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/minecraft-bedrock-edition-pc-free_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_off0000310d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310D 22528 bytes
SHA-256: f1342689f17f3b58874884f9b11d57dc3a72a888f8fb161dc6d125a904b2283d
font_01_sfnt_off00006362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6362 18908 bytes
SHA-256: 98dd521fdc905b9b601aa571a59d03869d80c4de55920eb13498827aa8b7d4ae

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