Malicious PDF — malware analysis report

Static analysis result for SHA-256 6049f0ddb745def1…

MALICIOUS

PDF

35.3 KB Created: 2021-07-07 16:42:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3db99233dd0b3f755d8b730529b20ac8 SHA-1: c7f62b5209654efc336f2ad2b4537c0cdd4689a0 SHA-256: 6049f0ddb745def198b619b37c055e155f6d6e627be4f2147fc59d4ac1dd88c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/free-robux-2021-game-hack. This lure is designed to trick users into believing they can obtain free Robux or game hacks. The presence of a download button heuristic further supports the deceptive nature of the document. No scripts were extracted, but the document's structure and embedded URLs indicate a phishing or scam attempt.

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.tw/app/431946152/free-robux-2021-game-hack In PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coinmaster_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-robux-hack-2021-ios_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/a-free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/secret-working-50k-free-robux-code_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/aprender-a-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/roblox-neon-district-hacking-how-to_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/robux-hack-2021_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_off000034db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34DB 21732 bytes
SHA-256: f392ecef1f9bd93bb40ffaf973999dbc8665ab0e9b3a521b1e3b71e54cc8edd4
font_01_sfnt_off000064b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B1 19116 bytes
SHA-256: bd102244ffb40c6add567cd3640126a26b927334c4b0bdc73f6a542841550b4a

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