Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66a5c4d1cfbbf72…

MALICIOUS

PDF

37.3 KB Created: 2021-05-22 16:12:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 009309b81c4bf2e19b21514373c03677 SHA-1: f16a236c9fb5bfc9429f914fe71d231b400fb2d0 SHA-256: d66a5c4d1cfbbf72a024f30f6e23a7fb862d63bdbc5743ffe5806da4dd9a1a8d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links disguised as 'game hacks' or 'generators', with a primary link pointing to a known malicious redirector. The document body and embedded links suggest a social engineering lure to trick users into downloading potentially malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector is being used to deliver a payload.

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/479516143/get-minecraft-windows-10-free-game-hack In PDF document text
    • http://sudamericarural.org/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/coin-master-daily-free-spins-link-today-twitter_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_off00003773.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3773 24904 bytes
SHA-256: 6634d83342be94fee306100ad8bda81628786cf40e30c0150c790539b62b2b03
font_01_sfnt_off00006fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB4 18524 bytes
SHA-256: afbe33bac95265c6f2b043ad9a50b9956be980e83b0cfba0a93a34130b59281e

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