Malicious PDF — malware analysis report

Static analysis result for SHA-256 08583e44b37724ab…

MALICIOUS

PDF

49.7 KB Created: 2021-06-03 14:26:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 53b4c98a548f00341dfeb1427d38e75a SHA-1: f8008e3a4ca95c8c1f07e83dcc68145b7f2f3fde SHA-256: 08583e44b37724ab310cfa3602b9fcf8eb0c69c23b49877adc409dd19d27b495
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, designed to lure users into downloading game hacks or generators. The primary malicious URL is https://netcdn.online/app/479516143/minecraft-free-ios-no-verification-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or social engineering attack vector, likely intended to deliver a secondary payload or lead to a credential harvesting site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.online/app/479516143/minecraft-free-ios-no-verification-game-hack In PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/pubg-uc-usa_GM1330123889.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/tiktok-free-like-app_GM835599320.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/is-tiktok-free-on-voxi_GM835599320.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.widyagamahusada.ac.id/repository/kachifpro_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000530d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x530D 30404 bytes
SHA-256: 868c0fc8fe4e90a53f6da9f6031e7c4e3f59c6ce08e2a18e083abcd676fad0e5
font_01_sfnt_off000097a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A5 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off0000a146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA146 17844 bytes
SHA-256: 314c8825a4d06e03bd849bd4cad10bf883abec19d637afa4c41587c94f1a0a3d

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