Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1b6424b25899f50…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 20:05:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6bb2003b2315822306ea1a683a1c67e2 SHA-1: f818bac6a7906347e1858b98d53c5804cf08d790 SHA-256: c1b6424b25899f5063814ad33f84871aa041c281783f6803ae59c25b3180b1a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites that are identified as malicious redirectors, specifically promoting "game hacks" and "generators." The document body and heuristic firings indicate a lure to click these links, likely leading to phishing pages or further malware. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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/united-gaming-net-coin-master-hack-game-hack In PDF document text
    • http://beaksandpawsfl.com/images/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/free-group-roblox_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://beaksandpawsfl.com/images/freespinandcoin_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_off000049cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CF 24312 bytes
SHA-256: 83c15a20dcb441647de86434faa831f12b1f5222f2283abb871fdda05f83bd72
font_01_sfnt_off00008179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8179 18624 bytes
SHA-256: cfeb828dedda213aee8682ea59dd941898f0663d73ad806f071fefcb0e9ee11f

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