Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6551f777b741c4…

MALICIOUS

PDF

44.5 KB Created: 2021-05-16 11:54:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2575c66126b9889ea699c6316cf9e511 SHA-1: bb92d53eba558d405c9d235df8d3b81878a37193 SHA-256: eb6551f777b741c4c9bc50043d253affb65ac2a83ff05dcc3ee96aa2fa47206d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of free game hacks and generators. The embedded links likely lead to further malicious content or malware downloads. The document's primary function appears to be directing users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/479516143/get-minecraft-for-free-game-hack In PDF document text
    • http://mbbs.hr/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-800-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-points_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://code.giftcards.comIn 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_off000048b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B4 25384 bytes
SHA-256: 6bf9da6db1b5751802c965a8aa676c5bf942b46721bc4fcfb7e978860cb04639
font_01_sfnt_off0000826b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826B 3092 bytes
SHA-256: 3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0
font_02_sfnt_off00008d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D16 17712 bytes
SHA-256: 35f99bfb73b52248bbdf58e6e807942ea3200a6c0759a8418b864f3a1fae0a50

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