Malicious PDF — malware analysis report

Static analysis result for SHA-256 836f625cb07b05ae…

MALICIOUS

PDF

43.6 KB Created: 2021-05-14 21:35:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c94219be42b5f3be31ec0cba47ea3032 SHA-1: a53bb30c38657030da3002fe43a03defb00c2898 SHA-256: 836f625cb07b05aeb90a8889d97100b3080caaddae5f54d56f2e5b373f38aca7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure for free game currency and hacks, directing users to a known malicious redirector. The embedded URLs and document content strongly suggest a phishing or scam attempt designed to lead users to potentially malicious sites. No scripts were extracted, but the PDF structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-free-co-game-hack In PDF document text
    • http://behsanroshd.com/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/optifine-pe_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coins-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47A7 28476 bytes
SHA-256: 23c295f1f17d551bbad9a3dc353a8cebcc0e843ced217a5fce532e3135eb3e1a
font_01_sfnt_off000088de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DE 18012 bytes
SHA-256: 3f1ded8a9c51e4f0f41c660fd84d3573ebe8f92a83837bcaa523a9614d650e73

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