Malicious PDF — malware analysis report

Static analysis result for SHA-256 6643ee445ea576be…

MALICIOUS

PDF

36.9 KB Created: 2021-05-23 02:07:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0dd2a05dfe675a817d47957b0133c752 SHA-1: d166d75c137f55baea079866dcc922a82d23182e SHA-256: 6643ee445ea576be9783070823b9839074ef3d09fa72cf2d678d3b11871c6866
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites offering 'free generators' or 'hacks' for popular games, indicating a lure for users. The document body text and heuristic firings confirm the presence of these malicious links and a general intent to redirect users to potentially harmful content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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/431946152/free-robux-group-game-hack In PDF document text
    • http://consultinggirona.es/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://consultinggirona.es/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://consultinggirona.es/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://consultinggirona.es/images/coin-master-hack-2021-without-verification_GM406889139.pdfIn PDF document text
    • http://consultinggirona.es/images/coin-master-free-spins-hack-download_GM406889139.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B1 27604 bytes
SHA-256: d398180f8e329f0c972b1ba837dd420a6e7e18a89d19746a72b28f292e9ad583
font_01_sfnt_off00006f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F65 18192 bytes
SHA-256: 388213afa323ee085de7e38d37e80f389e12e91d2d5a1b35e5038c11a526558f

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