Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e3b24354b0217c…

MALICIOUS

PDF

36.3 KB Created: 2021-05-22 09:13:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 320a80bef45f5277d3670b0345dfe60c SHA-1: 3ddc573a88c7e377ab89aca6981f295ad5a7207d SHA-256: d3e3b24354b0217c44f464ca67baf0c4245f4738d1e3e583092506f2091d8131
200 Risk Score

Malware Insights

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

The PDF contains multiple links to malicious redirectors, disguised as game hacks and generators, which are designed to lure users into clicking them. The document body and heuristics indicate a social engineering tactic to trick users into downloading further malicious content. The presence of multiple redirector links and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/479516143/free-minecraft-account-and-password-game-hack In PDF document text
    • http://behsanroshd.com/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/hack-client_GM479516143.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_off000033b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33B4 25020 bytes
SHA-256: f957531fc706b8a4a1e72e88c70f28070e652a5f8f40396b090af0e1caccb283
font_01_sfnt_off00006c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8E 18344 bytes
SHA-256: 071cc331fbe0dfc1a6c0e7c1f1383f87707aabc4deba919dc9b38235f2b9b975

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