Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba6d0d4a74249a5…

MALICIOUS

PDF

51.6 KB Created: 2021-06-07 09:52:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 28ac88422e13cfa931787ab749727124 SHA-1: 54346b9e64010388dc9a720a15752fd35284bd40 SHA-256: aba6d0d4a74249a51170a5d56458204c58365c9d0593762245e7db6f3128f7bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, specifically advertising free Robux and game hacks. The document body, though partially garbled, contains the primary malicious URL. The presence of multiple links to this domain and the ML classifier's high confidence score indicate a deliberate attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9464

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.tw/app/431946152/robux-gratis-hack-pc-game-hack In PDF document text
    • http://newbeginningsranch.net/images/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/robux-robux_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-make-a-free-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/roblox-avatare-free_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005182.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5182 32224 bytes
SHA-256: 5813461bffa79dfb514c0adbd349d19925d1e2fd355eefc5788e6ae6324dd916
font_01_sfnt_off00009c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C0B 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_02_sfnt_off0000a61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA61C 18624 bytes
SHA-256: 820950816025ec4859fb3a445f51fe3ab85065f17c4861dc0f6f940d4d4cd4b6

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