Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee52fe6eb4875017…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 05:58:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8e74c4904aeb2c5d05a30f01e6b93016 SHA-1: 29b97c6a419b94bcd2fdb3ab37918120e00d608a SHA-256: ee52fe6eb4875017a70b30bef5463d3a85a7f1e447cd80f75dde6ec2b769a8cc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lure users with promises of free in-game currency and hacks for popular games like Roblox and Minecraft. The ML classifier strongly indicated maliciousness, and the presence of IP address literals in URLs further suggests a malicious distribution infrastructure. The document's content and linked URLs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/funbloxxyz-free-robux-game-hack PDF link annotation
    • http://110.232.83.89/slimsppks/repository/blogspot-free-spins-coin-master_GM406889139.pdfPDF link annotation
    • http://110.232.83.89/slimsppks/repository/free-robux-earn-now_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/como-hacer-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-roblox-username_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/pokemon-go-free-gifts_GM1094591345.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/pubg-uc-vpn-apk_GM1330123889.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-real-working_GM431946152.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
font_00_sfnt_off00002aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAE 23144 bytes
SHA-256: 7f690a0f6a7daa2e1c0705b9565b8b1b011a8f1f9572f9aadef472f4bbd3143b
font_01_sfnt_off00005f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4A 19052 bytes
SHA-256: b8da4c12b443ea16a452d57305b0b851670a4d0bed79603d1953fd1acd138761

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