Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc01e8b0e77710e…

MALICIOUS

PDF

91.3 KB Created: 2021-03-30 08:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 04da8c07de7ec2c06e43d46505ed3437 SHA-1: 6855c8bfa7f9640f6b13f70dcaa1427021e02d7c SHA-256: 2fc01e8b0e77710e3702139bfd4d51c58ad011adecc5da4e662b953f67afaae6
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://lozipotod.ru/wix?keyword=monster+legends+hack+2020+android PDF link annotation
    • https://lamuwibosuzo.weebly.com/uploads/1/3/1/0/131071033/9421326.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/565hche/78390792714.pdfIn PDF document text
    • http://pl50off.info/how_to_share_a_story_to_your_story_on_facebookvfybg.pdfIn PDF document text
    • https://dexuganepo.weebly.com/uploads/1/3/1/6/131608037/7643236.pdfIn PDF document text
    • http://carbags.site/bekawitetay3336.pdfIn PDF document text
    • https://gosabejeda.weebly.com/uploads/1/3/1/4/131453015/4429de262.pdfIn PDF document text
    • http://merovew.xyz/bet9ja_old_mobile_bet_pageg0j92.pdfIn PDF document text
    • http://delayikapy.xyz/davexasosestj3i1.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/jdFhjgZ/business_powerpoint_presentation_guidelines.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xelimewat/19760589230.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/aur_pyar_ho_gaya_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/031d3dbf-24d6-47fb-b459-60ae23a8fa9d/crown_of_midnight_vk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e408a643-1d90-48ff-ac45-cacbccb53467/what_do_you_call_someone_without_a_conscience.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e1748f9-e4e9-4536-803e-c5ae68642d6b/story_of_your_life_and_others.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/97050130342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d4111ac-abd2-4f0f-91ea-faf74092dd90/5525763861.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/cambodia_tourist_visa_form.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/gosumanoda.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E9 3092 bytes
SHA-256: c111d5f4311a2eca7cdf4fcfe9ee2d2496a5148283504412c55ae3dafe686a3f
font_01_sfnt_off0000fdd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD4 5544 bytes
SHA-256: 90949b942bd56118decef67b97549515e1a2ca32b4c0a132e391eaead1fc23ce
font_02_sfnt_off000110a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A8 2140 bytes
SHA-256: 49dddaa543544930169c80d10742cf71a10a90771d945bdf421e53748b1fa594
font_03_sfnt_off00011a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A82 11348 bytes
SHA-256: 99186a073fe58f4f70fe7dc31de7c281948edef9aa9eb2ed77e10f8d2780715b
font_04_sfnt_off00014174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14174 16212 bytes
SHA-256: f4e247bdee89b0f6125f90e517fae2cac9cd098809b1a4102bcf98cbfdcc894d
font_05_sfnt_off000156bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156BC 1736 bytes
SHA-256: 1648accd5638f26481c437d0e436fdfb03edab78dab75f4e73239278c8cddc19

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