Malicious PDF — malware analysis report

Static analysis result for SHA-256 f985c484a26f1398…

MALICIOUS

PDF

36.9 KB Created: 2021-05-21 09:13:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e7cd5db2e0a4a80ab48ab8988ce95e5e SHA-1: 109b3c31ea6fc010aa12dee676292a66836d6566 SHA-256: f985c484a26f1398e4e87749aea610dab653d357ec2c38052ed657ec0bdc78e6
160 Risk Score

Malware Insights

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

The PDF contains multiple links, including one pointing to known malicious redirector infrastructure. The document body and embedded links suggest a lure for game hacks or generators, likely leading to further malicious content or downloads. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-free-download-ipad-game-hack In PDF document text
    • http://www.fluidtech.hu/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/hacks-for-coin-master_GM406889139.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_off00003403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3403 25824 bytes
SHA-256: 97218830801dba8be89b90aec7ac3244d650b8739ad8707109657534d95a9ce0
font_01_sfnt_off00006eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAA 18464 bytes
SHA-256: 277b1f8f281095ccfe68000cf594913ab5f65ed77c3843aba7451df56ad04c48

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