Malicious PDF — malware analysis report

Static analysis result for SHA-256 9169f6be04b4b159…

MALICIOUS

PDF

41.5 KB Created: 2021-05-14 22:01:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 2afda2f7245389b4029a263443867f35 SHA-1: 9bef949b6e72b1e99843ba6954c3b8b43d805be3 SHA-256: 9169f6be04b4b159a502448f9d44482086408c5b31087b666e1e724f3a72eb32
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, specifically advertising 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-hair-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a social engineering attack designed to lead users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-hair-roblox-game-hack In PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-free-play_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://collectrobuxIn 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
stream_003_off000045bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45BC 24980 bytes
SHA-256: 9f547aa77d07d3e2219780489fb1ce5166a1427340b7d49c9f8c6acab2c4e913
font_01_sfnt_off00007fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB2 18296 bytes
SHA-256: a0599e440df83d1220524ed19e510b9c2f6a3db0fbd0aff9e889db947f6eea7b

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