Malicious PDF — malware analysis report

Static analysis result for SHA-256 6742b9caafbef0f0…

MALICIOUS

PDF

33.1 KB Created: 2021-06-18 01:09:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f47fbf4bfbeb8b68e8e09f2add3cf8ce SHA-1: 4a84dcce6893b2decd6a19f06cce24af61824b0f SHA-256: 6742b9caafbef0f0b53ba5e94e7e360192bb712973d548cad38cf5642dba95d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The primary link, http://netcdn.co/app/431946152/best-free-roblox-screen-recorder-game-hack, is identified as a malicious redirector. The document body also contains a call-to-action phrase, reinforcing the deceptive nature of the lure.

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/best-free-roblox-screen-recorder-game-hack In PDF document text
    • https://hekl-software.de/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-hack-de-robloxdecom_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-promo-codes-2021-free_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/how-to-get-free-robux-no-inspect-or-hack_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://hekl-software.de/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://hekl-software.de/images/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://hekl-software.de/images/how-to-get-free-robux-on-iphone-7_GM431946152.pdfIn PDF document text
    • https://hekl-software.de/images/cbro-roblox-hacks-for-credits_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C62 21988 bytes
SHA-256: 010d008bf75eae3172079925d709eac9035bb9105a27c7b7689ac2960aa2d74a
font_01_sfnt_off00005d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2A 18740 bytes
SHA-256: 4a1fc07294c96c2e7ed0604e7685a8f3abebac9521b1b61de6b369254fe87fdd

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