Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4dcb08ff7b5ff20…

MALICIOUS

PDF

50.7 KB Created: 2021-05-31 13:06:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ceca9c438e8e50b73865819511738b04 SHA-1: 401f00b2075584bb94126d61d53ff17104e4f29d SHA-256: e4dcb08ff7b5ff207c3f690d51a070f19af63c4b77070828fc11c06a10419194
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generators' or 'game hacks'. The document body and embedded links strongly suggest a lure to a website that likely hosts further malicious content or attempts to trick the user into downloading a payload. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9681

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/431946152/free-roblox-exploits-game-hack In PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-roblox-free-hack_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-apk-extension_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tjiko.de/wp-content/uploads/fsqm-files/files59-roblox-hack_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E67 25236 bytes
SHA-256: da3a9f1fae5d5384a376dd972a6420c04546e58968fa58aa5fec80313c8cb912
font_01_sfnt_off0000890d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890D 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off000092c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C7 6700 bytes
SHA-256: ae114634718854704d615808d33fb1b747d90eb28e420080bd5adbdfe7fb6a27
font_03_sfnt_off0000a305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA305 18348 bytes
SHA-256: 1d9f36dea9d5b0f5d610c362339b15f960da10ce62be779289e367b395438bde

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