Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e452672d6bf795…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 00:14:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8a6472dcae07dcb065a1a5c410efdaf2 SHA-1: 64df270793fb7cb170a40fae9a183c21ce4ac88e SHA-256: 18e452672d6bf79514e781539aba8ed8f3020c06f0e474840e15283b92d3729d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The document body explicitly mentions "Roblox Cute Girl Outfits For Free" and "CLICK HERE TO ACCESS ROBUX GENERATOR", indicating a scam or phishing attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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-cute-girl-outfits-for-free-game-hack In PDF document text
    • https://tena-g.hr/files/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-fun-hack_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/can-pokemon-go-free-promo-codes_GM1094591345.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/how-to-get-a-penguin-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-hack-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/mobihack-net-roblox-hack_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_off00002fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD6 22208 bytes
SHA-256: 67b0b26b0007eb22e021ff5b4930a612bcb19fe8b9fd6dae884fb50a2f40c88f
font_01_sfnt_off000060a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A5 19012 bytes
SHA-256: 99710ca48a6436ed703d48ec3a9bd9ea419ca3db54de735bc10f3e6414ea3063

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