Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff71320b50e54f1…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 22:50:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 29daec072fd8a4f197c38b7b4f43a618 SHA-1: 2ce6b3216ccab2f9ef7389e0bee1791403a1a0a3 SHA-256: 7ff71320b50e54f1fe3533e26d945ecf88795715a3d2751b408b1f9bf9deb210
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users to external sites, including a known malicious redirector. The document body and extracted URLs suggest a scam related to game hacks and free currency for games like Roblox and Coin Master. The presence of embedded URLs and the overall structure indicate a phishing or scamming attempt, likely delivered as a spearphishing attachment.

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/has-roblox-been-hacked-2021-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-roblox-usernames-and-passwords-with-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/rememe-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-generator-no-human-verification-for-pc_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/script-executor-roblox-download-free-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-non-virus-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/earn-free-robux-the-legal_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/id-roblox-dress-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/game-kit-how-to-earn-your-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/get-robux-free-no-disabling-ad-blocker_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F63 22312 bytes
SHA-256: 931f44fe06f8bf4aa102594b6b1676680cbe57849ead0f4a6526a2f0afad20fa
font_01_sfnt_off000060be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 19232 bytes
SHA-256: e141ab1fe313fc8cc5a53d1116895352a1de4f7aab9b84cf167b30b0321de91a

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