Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6b12e493a718e2…

MALICIOUS

PDF

47.5 KB Created: 2021-06-14 00:20:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a20f8e29c272ab67f890262b61d30445 SHA-1: ffda01b1ac20da77f558fafd260299620fd18740 SHA-256: fe6b12e493a718e21461f3d6aa6c1d98e67038ecf96ea406f4ccaa5c969e009f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically advertising free game currency or hacks. The document body, though partially corrupted, contains a URL that aligns with the heuristic findings of a redirector lure. The primary goal appears to be directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/how-to-get-free-tix-in-roblox-high-school-game-hack In PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-hack-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-hack-robux-on-pc-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/robux-best_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/cheat-engine-bypass-roblox-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-robux-hack-no-survey-no-password-2021_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-be-an-admin-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/lacify-cheat-roblox_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C8 28216 bytes
SHA-256: 98152c06afd93c444f92297ab5fb0c5666b583ce51d2c29241aed810ba045699
font_01_sfnt_off0000887f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887F 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9591 18792 bytes
SHA-256: f3986b12a7f9c5471ce06e4462ffcc3f5ed6845a9cb5e109d291ac6a57981b9c

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