Malicious PDF — malware analysis report

Static analysis result for SHA-256 901d170164cc6db6…

MALICIOUS

PDF

44.1 KB Created: 2021-04-29 10:52:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a9eddded36e031463c235effa4d47965 SHA-1: 12a4addc149c45613fc4bfbf069c3f70cdece451 SHA-256: 901d170164cc6db691a6976f355c9a481e145308fbd41cae2c6f8a9d6989b629
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'generators' for popular games. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-prison-life-hack-pastebin-game-hack, which is repeatedly referenced. The document body, though partially corrupted, also contains references to this URL and similar lures, indicating a phishing or scam attempt designed to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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/431946152/roblox-prison-life-hack-pastebin-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/images-of-jhon-do-hacker-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/noob-pants-roblox-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/rover-hack-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-et-free-robux-on-roblox-and-bc.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-genorater-no-human-varification-no-survey-no-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-hack-download-no-survey.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-2021-dinero.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/good-robux-hacks.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/cheat-engine-roblox-youtube.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-azure-mines-cheat-scripts.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4158 26800 bytes
SHA-256: 22c39c202be64ce58622d2e4e8c58a2390ca5c92d3d65fab7a75d6caabb5f86a
font_01_sfnt_off00007e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E72 3312 bytes
SHA-256: 40bd8eebcb3a0d68a8646f1930e84f30a44bfa48525263c6c528f0bc1e9c1677
font_02_sfnt_off000089c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C1 18560 bytes
SHA-256: 0ac0f4d72928a729078b87515eba38b64c6b00013000901f9ef82be31b5c66b9