Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2f1f860b5a9c30f…

MALICIOUS

PDF

33.5 KB Created: 2021-06-21 11:23:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: a40ceb696950d1eadbe1cabcf97c0d76 SHA-1: ce51a33bc44b64c7f9485a52ddffc1f9d806063f SHA-256: b2f1f860b5a9c30f429b480505b48bdbe0877405f526c0a740309470fc919f93
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded links, including one identified as a malicious redirector pointing to 'http://netcdn.co/app/431946152/roblox-but-game-hack'. This URL is presented as a lure for a game hack generator, likely to trick users into downloading further malware or visiting malicious sites. The ML classifier also flagged this PDF with high confidence.

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/roblox-but-game-hack In PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/is-pokemon-go-free-on-iphone_GM1094591345.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/all-free-roblox-hats_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/free-animations-on-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://e-learning.m2mpekanbaru.sch.id/__statics/gudangsoal/files/roblox-assassin-coin-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB1 22000 bytes
SHA-256: 820c1c7bb4d6e48093a0d96cb880c0ee65ea29eb7dae96b5fd794dabdb1de2df
font_01_sfnt_off00005e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E86 18728 bytes
SHA-256: 95eea618166f8a6785b6a40ac83c50df9d126f189dd236c8e138cb2b7f46439e

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