Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea340bf5b769cf12…

MALICIOUS

PDF

41.8 KB Created: 2021-05-18 23:51:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e1d6f2b058a562f60c7cdc13fb4ad3f5 SHA-1: ddd513befe09255c595f90ea5ed286620d288c7f SHA-256: ea340bf5b769cf12f1421135035f582b4357f12bd00f0928c821a41b49ddf4c5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics indicate a lure related to game hacks and free currency, designed to trick users into clicking these malicious links. The presence of multiple embedded URLs suggests an attempt to direct the user to potentially harmful content or download further malicious files.

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/where-can-i-get-free-coins-for-coin-master-game-hack In PDF document text
    • http://sbm-nn.ru/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/getrobux-info_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-hack-free-robux_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_off000049af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AF 24484 bytes
SHA-256: 687a93e2ac8ea36b46dd7231631f2deb8cf30446b37a80a7acc3191764baa78e
font_01_sfnt_off000081cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CD 18076 bytes
SHA-256: d5e6c6e53570627b424db4ca2759b6e9ac4bc686df616c28f2d32ec66339f87e

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