Malicious PDF — malware analysis report

Static analysis result for SHA-256 045030bcbbd11310…

MALICIOUS

PDF

45.1 KB Created: 2021-06-02 08:55:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 87673ec96b17e35e7b57a53535cf6acf SHA-1: 681b3d2b5b86ef9a5bf64b4e8877f11a600b01b7 SHA-256: 045030bcbbd113102b2faa814359e6224b9ded8cb11932aa8d5d93b311292aab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as game hacks and generators. The ML classifier also flagged this PDF as malicious with high confidence. The document body and embedded links suggest a lure for users seeking in-game advantages, which ultimately redirects to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/ash-greninja-free-shopping-in-roblox-on-roblox-shopping-shirt-game-hack In PDF document text
    • http://asiasieja.pl/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/free-generator_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://asiasieja.pl/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://asiasieja.pl/images/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A3 25188 bytes
SHA-256: f189d3f427501d34de1d625ad04c9726a63ebec207ee66d900a8297edc419711
font_01_sfnt_off00008abe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABE 19220 bytes
SHA-256: b0f626068ac2e087e513ca6fd7fed1fb6de84a8f0758f97ba6a04f6af1d7b6d2

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