Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c9f9b4eabed08a…

MALICIOUS

PDF

36.3 KB Created: 2021-06-29 00:53:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 2aba62694c0b7970a29235461fe07509 SHA-1: 0982b5a0b6ea768122a06c373249311cb88b435c SHA-256: f5c9f9b4eabed08a2d82cbbade29201859bf2e38d297dd3462222d98caeb0eb0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a lure related to game hacks and cheats, directing users to a malicious URL. This URL is flagged as part of a malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the presence of a malicious redirector and the lure suggest an attempt to deliver a second-stage payload or lead the user to a phishing or exploit site.

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/why-cant-i-use-cheat-engine-on-roblox-game-hack In PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/roblox-glitch-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/how-to-hack-roblox-jailbreak-walls_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/comment-hacker-pour-avoir-des-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/cheat-engube-55-roblox_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/comment-hacker-roblox-sur-pc_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/roblox-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://www.sahebspices.com/uploaded_files/userfiles/files/free-robux-proget-games_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_off000034ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34AE 23064 bytes
SHA-256: b35ed9892cdd6c8b330f481d8b3fddcf27f5cdc84008dce38ccb4445bef4051e
font_01_sfnt_off00006856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6856 19256 bytes
SHA-256: c309ee620d04f754ca3878ae2e6dcef933bbdf50a8696c73482fdb906d25e73d

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