Malicious PDF — malware analysis report

Static analysis result for SHA-256 f212396a3732deb5…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 21:52:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 28cc5c17d2ba7fb4811525e4c0e4bb32 SHA-1: 6694368d2540eb5789f06741c1869b35fdd543fe SHA-256: f212396a3732deb5e214e69a636a15b832bfeb59c48167569933acd85ae0747d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure. The document body and heuristics suggest a lure for game hacks or cheats, designed to trick users into visiting the malicious URL. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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/cheat-intuable-roblox-mad-city-game-hack In PDF document text
    • https://www.tena-g.hr/files/game-guardian-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/hack-roblox-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-cheats-for-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-penguin-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://tena-g.hr/files/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-jailbreak-hack-installer_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000030ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30ED 21748 bytes
SHA-256: 0ca0121301cb98a32fc210ac2ecdf54472da36f2debae84414f0ba0deaee9c1b
font_01_sfnt_off000060c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C7 19568 bytes
SHA-256: e6d4cbc98aafd482f7e555ceacee06483ac33d7de4c99623f908df253a99e8ef

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