Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ec3d11fac568b9…

MALICIOUS

PDF

44.0 KB Created: 2021-06-14 01:48:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: dbad7f567eec878e7eac5c8b791db66a SHA-1: 0977a74997ef85ae7f58a85b9c950691c44c805c SHA-256: e6ec3d11fac568b9337d8a92e629db77b6ba0f0b18bdf735968703305ef10e91
220 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks and free generator sites. The primary link directs to a known malicious redirector infrastructure. The document's content and structure strongly suggest a phishing or malware distribution attempt, leveraging common gaming lures to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-urbis-hack-game-hack In PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/pubg-uc-id_GM1330123889.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/get-free-robux-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/pokemon-go-free-walk-hack_GM1094591345.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/how-to-be-a-builders-club-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/cheat-booga-booga-roblox_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.amtqatar.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-hack_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
stream_003_off00004c07.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C07 27088 bytes
SHA-256: 09f5ae4c7276a72be6a2b22a4d99c6fe7dd02996b4b9ed2e321fcd78712e1a92
font_01_sfnt_off000088f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F5 18488 bytes
SHA-256: bbe8ea8ec552a7be5234b02e0c5875a3ceb7ce18bbd6cf7785f1d689113b8c41

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