Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba200c6b65cfe610…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 15:12:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 46d49b20afe7b9194840b937b6ee55ac SHA-1: 6ee5b9dcb72f0d3b4bc97641b0f28ae0ddc9be95 SHA-256: ba200c6b65cfe610b9fac8f4b3d2c1526a38c0c9ce6bc54cd5900be5d8ff767e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a known malicious redirector. The document body and heuristics indicate a lure for 'free Robux' or 'game hacks', which is a common social engineering tactic. The primary link, http://netcdn.tw/app/431946152/free-robux-gen-game-hack, is associated with malicious redirector infrastructure, likely leading to further malicious content or malware download.

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.tw/app/431946152/free-robux-gen-game-hack In PDF document text
    • http://chem.ipb.ac.id/kim/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/To-export-more-data-upgrade-to-a-Guru-or-Business-subscription-plan_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-afro-roblox_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://chem.ipb.ac.id/kim/repository/free-roblox-hack-us_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0C 22460 bytes
SHA-256: bbfa6d7505096641c9d00d599fe82a6dd88900a320cc0b8fb073f8a8fd4a231a
font_01_sfnt_off00005ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF9 18716 bytes
SHA-256: 241c7495b7b7869825a77847e0d47c1d78029990e0b32ebb48689777b4105741

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