Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e5fb77cb2f4b26…

MALICIOUS

PDF

40.8 KB Created: 2021-05-13 10:34:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b021527ea88512abcca6cd2362e48f44 SHA-1: 7a3e9292b41e31c17e8377523931c1357bdb0f40 SHA-256: 68e5fb77cb2f4b262b39c8409356a638a73ed4dcb30a865caf0ecbe8ebf05a62
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free rewards'. The ML classifier strongly flagged this PDF as malicious. The document body and heuristics indicate a lure to a malicious redirector, likely to download a second-stage payload or phish for credentials.

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/coin-master-free-daily-rewards-game-hack In PDF document text
    • http://plantas.net/images/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/coun-master_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://plantas.net/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://plantas.net/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://plantas.net/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://plantas.net/images/roblox-website-robux_GM431946152.pdfIn PDF document text
    • http://plantas.net/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://plantas.net/images/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://plantas.net/images/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://plantas.net/images/hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/free-coin-app_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://plantas.net/images/free-roblox-accessories_GM431946152.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_off00004533.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4533 24700 bytes
SHA-256: 60eacbed3ae810cce5123ef13de2ca85e46e4a8c3e4a2f381fd45aec1a53c4da
font_01_sfnt_off00007c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C89 18468 bytes
SHA-256: 5b1132265676fc9e38bf9282f2abf7aef25498e5d4fab92a1e615749711bd66b

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