Malicious PDF — malware analysis report

Static analysis result for SHA-256 0001ae6922fe2e75…

MALICIOUS

PDF

44.5 KB Created: 2021-05-14 01:37:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5df1a119b2e0b4912e42ab674504a48f SHA-1: 43ccf0293f3d9b1a6131ff2abb32257e6b4454e5 SHA-256: 0001ae6922fe2e75e8e9d66ae7bbe79bdc0308ffb1036615b2627ad4b5faeeac
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains numerous links to external websites, many of which are hosted on what appears to be a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, and another indicated a fake CAPTCHA lure. The document body, though heavily obfuscated, contains references to 'Coin Master Apk Hack' and other potentially deceptive content, reinforcing the malicious intent. The primary attack pattern involves tricking the user into clicking malicious links that lead to potentially harmful downloads or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-apk-hack-3.2-game-hack In PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/what-is-coin-master_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_off0000487d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487D 24796 bytes
SHA-256: 3f096217abe2eb7b5ea8fece9724a2a199d3ce748a9006a639802c95a6725198
font_01_sfnt_off00008175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8175 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B60 18256 bytes
SHA-256: ea1725c6c01ea87f710175a69d8af0aa870f8ca7c85f9b36b7cf8826adfef3f7

Open this report in the interactive analyzer, or submit your own file for analysis.