Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1e606a30d93229…

MALICIOUS

PDF

44.5 KB Created: 2021-05-10 23:30:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 8c7ccf45711177eb015eb67ba47d5600 SHA-1: 385815efef43a8c60e3e6c34f431c7a8aa909def SHA-256: 7c1e606a30d93229aad1ddf8b3ed718864cf97f33b65002b2e234824cea0322c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for 'free Robux' which redirects to a known malicious URL. The document body and heuristics indicate a social engineering tactic to trick users into visiting malicious sites. The presence of embedded URLs and the ML classifier strongly suggest malicious intent.

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 https://netcdn.xyz/app/431946152/get-free-robux-without-doing-anything-game-hack In PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-almakmur.com/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://www.bandicam.comIn 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_off00004b79.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B79 26728 bytes
SHA-256: ae2432e6d24b75ad2dbe9830a5f137f95b92fdce26b4e0fda01695c6e7176901
font_01_sfnt_off00008909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8909 19240 bytes
SHA-256: a9e3aa10522a438dd9eef37bb3e7f322f16e38379d063b4a50e22a05dda2bc13

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