Malicious PDF — malware analysis report

Static analysis result for SHA-256 682b6a76ef393cfa…

MALICIOUS

PDF

41.1 KB Created: 2021-05-19 17:04:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d9fbfb6184a4975330b1b47f78503bde SHA-1: dbd8eb029c1ebf111676bbd1b0c8d6adb957b701 SHA-256: 682b6a76ef393cfa3cf3e41e665ea78a3c356f4c162eb1eb44f9daeb97d08e3a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them, ostensibly for game hacks or free currency. The primary link redirects to a known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive users to malicious websites, likely for further exploitation or phishing. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/best-site-for-free-coin-master-game-hack In PDF document text
    • http://g3galileo.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/pubg-uc-and-bc_GM1330123889.pdfIn PDF document text
    • http://g3galileo.com/images/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/roblox-website-robux_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://g3galileo.com/images/wurst-commands_GM479516143.pdfIn PDF document text
    • http://g3galileo.com/images/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://g3galileo.com/images/free-coin-master-spins-2021_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_003_off000047d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D5 24220 bytes
SHA-256: adf7d8389177cd9089e42d895401ee19f1633bc0a1065aaadbd9b78ea829f864
font_01_sfnt_off00007f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F43 17924 bytes
SHA-256: 54ba583de7ef6a44d3440287f67bc1236d632228fc17eebf6d790bd3337eaafd

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