Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ab613e1e796dc6…

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 03:47:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3bf39731ea14456a0a5d462ad6150b1d SHA-1: ad22200807343c9b6d02da67e9b87781566418f6 SHA-256: e5ab613e1e796dc6c3c65744ecbc1be9d3334c24b64bf9e6ecd840d953c92f1d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and free item generators. The document body and extracted URLs strongly suggest a lure to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the nature of the links and the heuristic firings indicate a phishing or redirection attack.

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.co/app/431946152/how-to-get-any-item-in-roblox-without-hacking-2021-game-hack In PDF document text
    • http://centr-expert.su/images/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-da-hood-hack-or-gkicht_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://centr-expert.su/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/hacking-on-roblox-dates_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/cheat-engine-roblox-money_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-tiktok-followers-trial_GM835599320.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/robloxhacks_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/how-roblox-got-hacked_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/no-verificacion-humana-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/free-draw-roblox-tips_GM431946152.pdfIn PDF document text
    • http://centr-expert.su/images/roblox-esp-cheat-engine_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_off0000305c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x305C 22736 bytes
SHA-256: 5019f174adbbac318427bcdb796f493daf567158a082a38408672d9545b7231e
font_01_sfnt_off00006288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6288 20204 bytes
SHA-256: 6276c7eb0ed0fbb9556793495703bf90b4db6420bd8652d1042a0a1e4a31d460

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