Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e38bc4850270d40…

MALICIOUS

PDF

47.5 KB Created: 2021-05-16 10:26:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: bbdd24b01b09dc1919aaadd65b30f52c SHA-1: 0f8df041e99cb93e7b88d508969e1df02ba04958 SHA-256: 5e38bc4850270d4092f8f93854f768bf6fbb5805d55acf59ccea57af90da1f98
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users into clicking on what appear to be game-related resources, such as 'free generator / game hack' or 'coin master daily free spins'. One primary URL, https://netcdn.xyz/app/479516143/minecraft-game-hack, is flagged as malicious. The document's structure and content strongly suggest a phishing or social engineering attempt to redirect users to potentially harmful sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/479516143/minecraft-game-hack In PDF document text
    • http://www.homesweethome.pl/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/mcpe-download_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/daily-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robux-converter_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B4E 25116 bytes
SHA-256: 06f2f96bd589368d65005459d1ffc9d4d57d53507f43c16bafd71d099efe96ac
font_01_sfnt_off00008469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8469 3084 bytes
SHA-256: eeadcb18adcfe57e07f5655a001ed91230d3e27a0eb02d3d0a65cc7828d94f40
font_02_sfnt_off00008ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF7 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off00009907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9907 17568 bytes
SHA-256: ce96ee2cb1800a95c911c77dfe81c9a72a479049c6676c05affe2ae793ebac2d