Malicious PDF — malware analysis report

Static analysis result for SHA-256 493925d6e05fe7b0…

MALICIOUS

PDF

40.4 KB Created: 2021-05-11 09:15:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7644f74ab59eb378b3778e18aa5f3748 SHA-1: 6dabfa1d881259b3fd1cc8285bf785d8a692d8c0 SHA-256: 493925d6e05fe7b0218195f830593c94b35e07a4d9667cf410670774b01b4612
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites and other PDFs, masquerading as generators for game cheats and free currency. The primary URL, https://netcdn.xyz/app/406889139/40-free-spins-coin-master-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a lure for users seeking game-related exploits, likely leading to further malicious content or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/406889139/40-free-spins-coin-master-game-hack In PDF document text
    • http://www.homesweethome.pl/images/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/krnl-download_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-daily-free-spins-link-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_off0000446e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x446E 24368 bytes
SHA-256: d57deff086755fac095f6757fc3c3db4d842a513312665c0f8a824eb5ea4c2c4
font_01_sfnt_off00007bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFD 18120 bytes
SHA-256: adc3b494d1fa0974f6acdf3c8a88f4cec1eca3c3c07b4c24b7a089c53791e33f

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