Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e3939baf7189261…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 10:40:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bc2c7afa639a564fcfcca2059fe6112a SHA-1: 08c4f1e4220dfd45d970f130e5f01bba25084143 SHA-256: 5e3939baf7189261eed15e814dc219105668fdfc8e23150713e0407828e9ece8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or malware downloads. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/how-to-hack-someones-minecraft-account-game-hack In PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-carde-roblox-gift_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-gamepasse-roblox-2021-august_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/clothes-for-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/rob-hacker-free-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-r-cheats-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/suits-shirts-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-cheat-engine-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-or-real-without-email-needed_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/get-free-robux-by-doing-nothing_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-hack-channel-art_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/chaos-washers-on-roblox-is-getting-hacked_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
font_00_sfnt_off0000304a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304A 21552 bytes
SHA-256: 166184c1b733b49fe554f594610c3edca15f626e2392def6f565db0eb5ce0f9d
font_01_sfnt_off00005f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E 18732 bytes
SHA-256: befeaf3d15adc7dbf77ae68228bafe30c05ad2ce3d788f7dbc4b7c343750f902

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