Malicious PDF — malware analysis report

Static analysis result for SHA-256 71133bc21b9f855f…

MALICIOUS

PDF

77.2 KB Created: 2021-03-03 06:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fd26d194cd83d3bddf458ead8a5232a SHA-1: 908bf4354055c55e26a8c7621adc8121c5e480f7 SHA-256: 71133bc21b9f855fac41cad1759580ba24b091670f2b04160bf6b5d5f3fc4099
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'Square d electrical panel template', likely to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/wix?keyword=square+d+electrical+panel+template
    • https://static.s123-cdn-static.com/uploads/4407303/normal_5fc77233507aa.pdf
    • http://effektzhizni.ru/blender_2.8_manual_espaoln9s4c.pdf
    • http://manovina.mypressonline.com/protocol_helicopter_remote_control.pdf
    • http://myluckywin.site/desimafirixaganekobojahty55.pdf
    • http://ukranews.site/250023135263wgf3.pdf
    • https://cdn-cms.f-static.net/uploads/4459337/normal_5fd88726590da.pdf
    • https://cdn-cms.f-static.net/uploads/4466398/normal_5fd7ba4157790.pdf
    • https://cdn.sqhk.co/jemitaso/xihPijg/cheapest_second_hand_clothes_online.pdf
    • http://ruguwafe.scienceontheweb.net/developing_effective_communication_skills_ppt.pdf
    • https://cdn-cms.f-static.net/uploads/4489402/normal_5fda2079049f3.pdf
    • https://static.s123-cdn-static.com/uploads/4475995/normal_5ff028f071a40.pdf
    • http://alania365.ru/wozaloxigaloni1swed.pdf
    • https://static.s123-cdn-static.com/uploads/4373264/normal_5ff856919d579.pdf
    • https://static.s123-cdn-static.com/uploads/4421466/normal_5ffa6e8899452.pdf
    • https://cdn.sqhk.co/mudaxomemut/75VLLP4/67131282302.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/nemafu/89675101996.pdf
    • https://s3.amazonaws.com/ruzaganog/51302098696.pdf
    • https://s3.amazonaws.com/dogazisuze/31632985416.pdf
    • http://pabewuvuxaf.onlinewebshop.net/paperbag_princess_melrose.pdf
    • https://s3.amazonaws.com/somisilegex/intellij_format_python_code.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e413.bin
bb60fdabf87fce18daa21b44c64ea3aa2d8106388fcbd121fb4bdaeebded3e65
pdf-font-stream PDF embedded font (sfnt) at offset 0xE413 5044 bytes
font_01_sfnt_off0000f50f.bin
8b200f68cb87491388d9ebfc9eb70632d9473862a3bfd918d46fddae0bb4cdf4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF50F 10544 bytes
font_02_sfnt_off000118ec.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x118EC 4324 bytes