Malicious PDF — malware analysis report

Static analysis result for SHA-256 337ab9dc26db4ce4…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 05:36:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d6d215bd2eb98ae0f546c933d081f2cf SHA-1: f00174f963e039b4c499fd01f4d0620f8dba9c03 SHA-256: 337ab9dc26db4ce489ef1e8d5e7a48d8b806d0ee140cd34c29234b03bdb7134e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and sites offering game hacks and cheats, such as 'Roblox Prison Lif Ewall Hacking 2021'. The document body explicitly contains a call to action to access a 'ROBUX GENERATOR'. The presence of embedded URLs and the lure of free in-game items strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content or further malicious downloads.

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/roblox-prison-lif-ewall-hacking-2021-game-hack In PDF document text
    • https://www.tena-g.hr/files/robux-hack-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-free-robux-2021-youtube_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/mcpe-116_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-hack-roblox-no-survey_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/claim-free-robux-roblox-rewards_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1D 22500 bytes
SHA-256: 9a7ca9bbee3c4bbcd4cdaa0656f47bbb769f244ab94c1749790282a3d50ebd5b
font_01_sfnt_off00006125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 19496 bytes
SHA-256: b21fb9122a5eac89304bd46c7eddfd96b49f63b5b0b11bfd7745a52282448deb