Malicious PDF — malware analysis report

Static analysis result for SHA-256 37ffb1c0a459766d…

MALICIOUS

PDF

74.2 KB Created: 2021-03-22 23:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79e3ab252b5bd8b805f10068de33cc79 SHA-1: d49f9f4529f13d54c4a14bc054dcf11b9f30ddec SHA-256: 37ffb1c0a459766d3c4cdf96773056135c1470fa5b2d08197c18e8898bbf7d9e
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be related to a 'Kenmore ultra wash quiet guard 3 dishwasher manual', serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/strik?utm_term=kenmore+ultra+wash+quiet+guard+3+dishwasher+manual
    • https://static.s123-cdn-static.com/uploads/4387713/normal_5fec59a566817.pdf
    • https://static.s123-cdn-static.com/uploads/4453105/normal_5ff00460503c7.pdf
    • https://cdn-cms.f-static.net/uploads/4368982/normal_601af1f0e1188.pdf
    • http://sunepoxuvigos.66ghz.com/94078010065.pdf
    • https://static.s123-cdn-static.com/uploads/4423700/normal_5fe283d31fae7.pdf
    • http://gewusoluxul.scienceontheweb.net/biblical_allusions_in_literature.pdf
    • http://wodekenizowa.getenjoyment.net/juzivipilekusuzigezagew.pdf
    • https://cdn-cms.f-static.net/uploads/4381759/normal_5fd302a4e9d67.pdf
    • https://static.s123-cdn-static.com/uploads/4380527/normal_5feb269a6acad.pdf
    • http://jevafurevozu.mygamesonline.org/fender_mustang_2_footswitch_schematic.pdf
    • http://fanilobepewe.sportsontheweb.net/unir_varios_en_uno_android.pdf
    • http://sumidabitax.iblogger.org/89133509174.pdf
    • https://cdn-cms.f-static.net/uploads/4368479/normal_6013489b05392.pdf
    • https://static.s123-cdn-static.com/uploads/4379974/normal_5ff509369eab3.pdf
    • http://zageketukux.iblogger.org/how_to_evaluate_a_franchise_business_plan.pdf
    • https://cdn-cms.f-static.net/uploads/4488316/normal_601e3596ea2cb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fobupozomorefiw.epizy.com/smtp_gmail_information.pdf
    • http://gagivipupine.epizy.com/york_ycav_chiller_service_manual.pdf
    • https://b860438a-ced3-4995-86f2-ad9a24e3f15c.filesusr.com/ugd/938eb2_a4c87f4004f94a29a28d17f8d5331f49.pdf?index=true
    • http://vejabimumen.epizy.com/illustration_portfolio_website_template.pdf
    • https://be934b08-0dcc-4e2e-8de1-c3c1c32dbfab.filesusr.com/ugd/d5415a_f8129e00910f40909657a78a0d7c8aa5.pdf?index=true
    • http://tirujukixiw.epizy.com/nozadesuzim.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d753.bin
3244b8d680f49fd7ec81ad735a8336b9256389addefbe708d0ffdc8ec4a1db14		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD753 5588 bytes
font_01_sfnt_off0000ea39.bin
fb868c3eec464d669f6fec26e0ecd214260194a9aaab5c1b44ab807164a5479c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA39 14532 bytes

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