Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e3f2549212bbbac…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 11:10:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: c2d2c42795deb4dbf5c03d3527ff8d93 SHA-1: 35b330b841e135c39ac82aa591358c2d511aab66 SHA-256: 3e3f2549212bbbac995948dacfca824741038e2543ba864e4848081fc550f59c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a 'free generator / game hack'. The document body explicitly mentions 'Get Free Robux No Codes' and includes the malicious URL, indicating a phishing or scam attempt. The presence of embedded URLs and the lure of free in-game items strongly suggest a social engineering tactic to drive users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/get-free-robux-no-codes-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-code-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/rise-of-nation-money-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/arsenal-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/como-descarar-roblox-hack-para-pc_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/counter-strike-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/100-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/cheats-for-lumber-tycoon-2-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-jailbreak-redboy-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-not-a-scam_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_off00002ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFD 22320 bytes
SHA-256: ba5f799a9e8a60ee0a494ce9c493a4fb1c911977ead145ad2a3cea1d5da0cbd8
font_01_sfnt_off000061a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A3 18996 bytes
SHA-256: 8c59cf25053626c550b6d39520233e3d073777699561b396f83574f22a668cdd

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