Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa7eb38ca6494306…

MALICIOUS

PDF

37.1 KB Created: 2021-05-23 19:50:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 570675a524051eed60e894b349b196e6 SHA-1: 72f2aa69790fc0c3903f85362c3105cbda3efc99 SHA-256: aa7eb38ca6494306600fb52a63b02832c3fb560c7a419c736591013c1db75315
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising 'robux hacks' and 'game hacks'. The document body also contains a call-to-action phrase, reinforcing the lure. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves tricking the user into clicking a malicious link, likely leading to further malware download or exploitation.

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/robux-hack-game-hack In PDF document text
    • http://precisionheavyhaul.com/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-coins_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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
stream_002_off000031ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31CA 27376 bytes
SHA-256: 53008521b396cdf08cadd9c03a119b5807e29c5224e7034d479963356ef7c579
font_01_sfnt_off00006f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9E 18248 bytes
SHA-256: dc70545b78036d2d989a53e60713ee6b6ba72604799932bb5b2fc13357d7a02a

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