Malicious PDF — malware analysis report

Static analysis result for SHA-256 817be14283fb7900…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 12:03:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7d0d7f4939b04ea77bec2875e1031081 SHA-1: 584f660fa9c32ae377177ceed8c77b2fdb40e179 SHA-256: 817be14283fb790075e5a7c347582d565a9ab528dbff179a0b248b6a4299eb1a
160 Risk Score

Malware Insights

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

The PDF contains multiple links to malicious redirectors, including one explicitly labeled as a 'free generator / game hack'. The document body and embedded links suggest a lure for users seeking in-game currency or cheats. The ML classifier also flagged this PDF as malicious. The primary attack vector appears to be social engineering via a malicious attachment leading to further malicious sites.

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/406889139/daily-free-spins-on-coin-master-game-hack In PDF document text
    • http://uctovnictvosnv.sk/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/pubg-uc-exchange_GM1330123889.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://uctovnictvosnv.sk/images/2021-free-spins-coin-master_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
stream_002_off00003401.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3401 26268 bytes
SHA-256: 687e8137d16af02a50c946138717b453475659e4b33871fc31d3f754767dba16
font_01_sfnt_off000070b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B4 18308 bytes
SHA-256: 1bc93d0bdf7bcc9dde046a772a1d5e318036c000a48b0748ebe0e6d1e12db192

Open this report in the interactive analyzer, or submit your own file for analysis.