Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3902e52f8b9bf3…

MALICIOUS

PDF

43.8 KB Created: 2021-06-08 02:02:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 68fc00d4ebf9daa9f0f7b536d98a6124 SHA-1: 6a454c8d3ac3371e72119daccd7127170b11bef7 SHA-256: 0c3902e52f8b9bf30a9080a91ee589069a557c116e5b7241d7fcd8766b20d106
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The heuristic PDF_GAME_HACK_REDIRECT_LURE strongly indicates a social engineering tactic to trick users into visiting a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead the user to a malicious download or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/roblox-robux-hack-no-survey-android-game-hack In PDF document text
    • http://www.fluidtech.hu/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/hack-roblox-club_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004c0c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C0C 25536 bytes
SHA-256: dcf4c3b683ab61b484c4ad5bea0c2fe2f30450bcdb9a35936c1eb81104040456
font_01_sfnt_off000086a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A3 18908 bytes
SHA-256: 0c908f02704238a0f4adeee42e1b19101b0e3005a9db81778c0c9f3deeb0eee8

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