Malicious PDF — malware analysis report

Static analysis result for SHA-256 75f6cb44fff50ff0…

MALICIOUS

PDF

47.3 KB Created: 2021-05-11 01:03:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 308e9a35c1fcafb29621d8ab6d8e7092 SHA-1: 6061464af69f260603fbd3b91d551afbc7dde714 SHA-256: 75f6cb44fff50ff0efe2c7f582a808e296389a13b2bc1c4b4a574c90186d3f94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and cheats. The document body and embedded URLs suggest a phishing attempt to trick users into downloading potentially malicious software or visiting compromised sites. No scripts were extracted, but the presence of malicious links and the overall lure indicate a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/406889139/coin-master-hack-apk-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-online_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/100-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-apk-35-13_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_003_off00004d2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D2E 28392 bytes
SHA-256: 170e8f55462af1803f4ac1c2177eae61e353d28d50bbc32c6c3e1e1a81d02b7a
font_01_sfnt_off00008d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D99 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9783 17892 bytes
SHA-256: f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64

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