Malicious PDF — malware analysis report

Static analysis result for SHA-256 d89a5ca793d06a3c…

MALICIOUS

PDF

43.1 KB Created: 2021-05-14 12:13:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f4720a411e5e4d4a889d9b631d35e2d0 SHA-1: 34cfae2eec418c6626e183ff21a94388785d4c0d SHA-256: d89a5ca793d06a3c32dc62a64208a61266b589ed98724b5ab340d3acf58da0ce
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into downloading potentially malicious files or visiting scam websites, masquerading as 'free generators' or 'game hacks'. The primary redirector URL is https://netcdn.xyz/app/431946152/free-robux-real-2021-game-hack, which is associated with malicious redirector infrastructure. The document body and embedded links suggest a social engineering tactic to trick users into clicking through to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/free-robux-real-2021-game-hack In PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/getrobux-come_GM431946152.pdfIn PDF document text
    • https://elearning.manesa.sch.id/__statics/gudangsoal/files/free-minecraft-servers-to-join_GM479516143.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_003_off00004964.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4964 26380 bytes
SHA-256: 7f26bcc392bdb7c59ac6ad325e729b43a1827440655ac3b0b762bbf2544c7d17
font_01_sfnt_off0000848d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x848D 18720 bytes
SHA-256: a03d25a6fa0cc118f86b8100faabbd8a2e80035a992cccb98ee09d3278d79c98

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