Malicious PDF — malware analysis report

Static analysis result for SHA-256 33bf871ff311e28f…

MALICIOUS

PDF

38.6 KB Created: 2021-05-22 15:09:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a97331d0624e66fa9d89a26151b41146 SHA-1: 6553563ac296e058f987fba2d2cbe955cd5696e9 SHA-256: 33bf871ff311e28f8bb21bc2278741d7e73885cccb83773af46a618656d144fd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors and further malicious PDFs, masquerading as game hacks and generators. The document body explicitly contains a call to action to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' and directs users to a malicious URL. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/479516143/minecraft-games-to-play-for-free-game-hack In PDF document text
    • http://atiltd.com.tw/upload/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://freegiftcodes.euIn PDF document text
    • https://www.youtIn 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
font_00_sfnt_off000032e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E8 24980 bytes
SHA-256: 9b565e09886d4a65cf10c7571a82e35c10e479a756746ebcf47dde8b65179a67
font_01_sfnt_off00006b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0F 2948 bytes
SHA-256: a73da5eb11f857d980e7c62528c4ce67855199d37e0b85a8f4d71fa153bbd868
font_02_sfnt_off00007544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7544 18380 bytes
SHA-256: e4e6021f190597b5ba2cc648d82e873dd3d7a425745f666e69b81b8efe23a832

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