Malicious PDF — malware analysis report

Static analysis result for SHA-256 74555d5572e33dfc…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 05:12:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: efe44d75985f49f4bd6adfcb7e50b132 SHA-1: 18398b03d2127b15f093ae808878d976890477c2 SHA-256: 74555d5572e33dfc76327ea3ff0c8d7a63327d459d0730940982595718ff72f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, directing users to a malicious redirector. The document body and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/how-to-get-free-legit-working-robux-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/edit-avatar-roblox-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/anyway-to-legally-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/link-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-roblox-experiment-lab_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-gift-card-codes-2021-march_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-roblox-accounts-2021-september_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-on-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-tablet-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-anything-for-free-on-roblox-2021-inspect_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-exploit-2021-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/this-server-is-hacked-sound-id-roblox_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000032b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B7 22196 bytes
SHA-256: 0afad9908a4338547bbc8a243cea9f9458e74518b77b065e9e48d63cf7fb3cd4
font_01_sfnt_off000063f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F1 19472 bytes
SHA-256: 63230f991bc617e94fc0028bbc160f7237f3c29790eb182a010ec57d421f11f9

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