Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06de28477a0e30a…

MALICIOUS

PDF

41.6 KB Created: 2021-05-11 04:01:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 34915fea7bfd06244017609d425735af SHA-1: a1b7d4cc76ac147f4436eb70337ca5dc1a43cffd SHA-256: e06de28477a0e30af747dc70f06348b46f40a68234cce041a5500a5dcb233d89
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as offers for game hacks and free currency. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting. No scripts were extracted, but the presence of malicious links is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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 https://netcdn.xyz/app/406889139/free-coins-coin-master-ios-game-hack In PDF document text
    • http://lib.unwahas.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-website_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://lib.unwahas.ac.id/repository/how-to-get-free-robux-without-verifying-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
stream_003_off000045bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45BC 26268 bytes
SHA-256: cad77a243f5d06ddca6d984254b9b6749f7bb58c98c98e4e2b5326a4c0f5fb39
font_01_sfnt_off000081f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F0 17712 bytes
SHA-256: f83e072817e97c1894950a6710750dab4701111bee6087413b5c7634198f8e68

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