Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06a20083c6dcc46…

MALICIOUS

PDF

39.7 KB Created: 2021-05-21 11:33:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 17556fe225a1aac071fff91f9476d387 SHA-1: 487a898585ad18bdfdd7838884e01fbf84c2bfc1 SHA-256: f06a20083c6dcc460362c4a96fb46282fe31c39b1b9f3e4d8754cf3bd3d1084d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to known malicious redirector infrastructure, specifically designed to lure users with promises of free game hacks or generators. The document body and embedded links reinforce this lure, aiming to drive traffic to the malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack to redirect users to potentially harmful content.

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/can-you-make-a-minecraft-server-for-free-game-hack In PDF document text
    • https://globair.com.tw/image/data/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000337b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337B 27444 bytes
SHA-256: ac19cf88a3851f8e93371d7b2ddd880e47f114374b394d80eecf9e91ad10a316
font_01_sfnt_off00007028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7028 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off000079cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CF 18296 bytes
SHA-256: 7b2a5025a6b2eafbb08597cb19c0e2dd24287b9ce61b32a45f1f6eb7f3859dea

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