Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa2ce71b2c818785…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 21:29:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b79d1a7ab01a680dd8f59f7cf20184f7 SHA-1: 407f6995cd0d8158c1e40a50d8bcdda611fdb8e5 SHA-256: aa2ce71b2c81878546a21775d0766eb8b8d21ef12bb9350e57be4f68e992aade
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The ML classifier strongly indicated maliciousness, and the document body confirms the lure is related to 'Roblox How To Get Headless Head For Free'. The primary malicious activity observed is the redirection to a known malicious URL, likely to facilitate further compromise or phishing.

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-how-to-get-headless-head-for-free-game-hack In PDF document text
    • https://3qblocks.com.tw/image/data/files/pokemon-go-free-dragonite_GM1094591345.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/hack-money-pizzeria-roleplay-remastered-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-welcome-to-the-neighborhood-of-robloxia-v4-free_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/hack-download_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-hack-and-get-free-robux_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0B 22108 bytes
SHA-256: 287d080c77b74d360ec7347c0eca9a55691806c27ba06f3b9319444142348e4a
font_01_sfnt_off00006037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6037 19092 bytes
SHA-256: ed90f2de804c8f52a64b5441b36cd5bf97838072b0b091689bd8d4ac4ffdd692

Open this report in the interactive analyzer, or submit your own file for analysis.