Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de38cdecb676007…

MALICIOUS

PDF

41.1 KB Created: 2021-05-21 04:05:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6968207bb8dbb5663727bf970c05b14b SHA-1: da419ef1c18bc2a594685ac286bd0288a41e9efb SHA-256: 0de38cdecb676007699f79f8e5b94c307ef43a5c5a49e968269d20784d9aadfd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, one of which is identified as a malicious redirector. The document body and heuristics suggest a lure for 'free Robux' or 'game hacks', indicating a phishing or malware distribution attempt. The presence of embedded URLs and the ML classifier's flagging further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7407

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-place-game-hack In PDF document text
    • http://gornjastubica.hr/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-free-pet-food-links_GM406889139.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_off000034aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34AA 26584 bytes
SHA-256: 7d932bcf0851eee691d6916cca40cf46e4936d21c8369e772f634eee4db599e1
font_01_sfnt_off000071d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D1 3768 bytes
SHA-256: e9e59659cacccee180e8c9e5fc12d6cc662f1296b515a70a826db89d6b87bc29
font_02_sfnt_off00007ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE6 18472 bytes
SHA-256: a8315d3de564ce67f995c8887965c7d9f34366905f839248eafe88b792a59691

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