Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c02a2c3c8e1f1b…

MALICIOUS

PDF

34.7 KB Created: 2021-06-20 05:12:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c46dea69b25aaa492d61c5b6ef4e185c SHA-1: 095773f148a724b7a17c4224328ccf5059333f55 SHA-256: 52c02a2c3c8e1f1be5fe0046257a7f31417c5a2ab8dbf1870b660da12c23d673
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to click these links, likely leading to further malware downloads or phishing attempts.

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-free-bc-generator-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-computer-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/thomas-roblox-free-games_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/mega-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/group-give-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/slurp-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hackaron-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/earn-rbx_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-thumbnail-maker-free_GM479516143.pdfIn 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
font_00_sfnt_off00003166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3166 22544 bytes
SHA-256: 88fb19f2198a9d517cd5d36d86cabb068511a01cfa4212a7a9a5c09092f18579
font_01_sfnt_off0000638b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638B 18752 bytes
SHA-256: c324b01f0f2ae49cc0675cf5e4ecbe77da78c97da219603edc4d708cf8320e8d

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