Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39235e1ef94fe38…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 06:31:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: df7e2e10cb09daee27bea5753ef7eaa1 SHA-1: 051a1dcc058cf555e96673738fa5c52d36a8b4aa SHA-256: e39235e1ef94fe38f0c7208fbbb84e162b241245315487f5ace33b3b70708a6c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generators' for popular games. The document body and embedded URLs suggest a lure designed to entice users with promises of in-game currency or hacks. While no scripts were explicitly extracted, the PDF structure and malicious links indicate an attempt to redirect users to potentially harmful websites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/free-coins-for-coin-master-game-hack In PDF document text
    • http://zinicrom.com/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://zinicrom.com/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://zinicrom.com/images/roblox-sued_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://zinicrom.com/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://zinicrom.com/images/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://zinicrom.com/images/coin-master-hack-spin-generator_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000473e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x473E 25192 bytes
SHA-256: 27c501b44ea16a30aadd58844215798136c7ca6d3cf9e3971b632954c41d0d29
font_01_sfnt_off00008151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8151 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3C 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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