Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4505adac076a7b6…

MALICIOUS

PDF

34.6 KB Created: 2021-07-02 05:02:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 24ec3fcac5df0498bc0d02112c28a7d0 SHA-1: aa0ea206e7588e24cbdae5baa7018b38b87c634c SHA-256: f4505adac076a7b6847a9c78ce1975cfc9014f32a0023645d313442e0a075a24
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, disguised as generators for game hacks and in-app purchases. The document body and heuristics confirm the lure is related to 'Roblox Robux Hack Mod Apk' and similar game-related cheats. The ML classifier strongly indicates maliciousness, and the embedded URLs are the primary indicators of compromise.

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-robux-hack-mod-apk-game-hack In PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-admin-hack-client_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/block-best-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F95 22324 bytes
SHA-256: 815cf658b73d34f6c3fb5a4cc0963b9d7076f4637b4709b426b97b16e2699b56
font_01_sfnt_off0000616b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616B 19344 bytes
SHA-256: 53339e82da6a105d3a60b3dabc09edbfb02a12c49a5bc8a5ab6258c349fdb45c

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