Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a9552534e8f3777…

MALICIOUS

PDF

81.1 KB Created: 2021-03-17 03:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 294e83c33d7d58b5880b7cf6ed71c847 SHA-1: be1d3104887873ac5d112699d2d720543ee897fb SHA-256: 7a9552534e8f3777750ceb8e0fbe3412dd838057c2333fa88b428af862686ca0
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to Herman Miller Aeron chairs, directing users to a suspicious URL. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=how+to+tell+the+size+of+a+herman+miller+aeron+chair
    • http://nogefoxezegu.22web.org/riradisojukanalowevegoxo.pdf
    • http://jakesubinosol.scienceontheweb.net/diary_of_a_wimpy_kid_book_14.pdf
    • http://zelumefepa.sportsontheweb.net/fantastic_four_movie_download_in_tamil_isaimini.pdf
    • https://cdn-cms.f-static.net/uploads/4454671/normal_6036c07022055.pdf
    • https://static.s123-cdn-static.com/uploads/4414689/normal_5fe1903517dd6.pdf
    • http://wolifote.getenjoyment.net/microsoft_excel_cheat_sheet.pdf
    • http://jefevivavifax.scienceontheweb.net/rheem_marathon_50_gallon_electric_water_heater_reviews.pdf
    • http://wajazenizur.mywebcommunity.org/dosixamolularizaviji.pdf
    • https://sazekunoteti.weebly.com/uploads/1/3/2/7/132740187/8bd9162dcf4.pdf
    • https://cdn-cms.f-static.net/uploads/4365660/normal_6016a97720731.pdf
    • https://gidisapawifo.weebly.com/uploads/1/3/4/6/134611794/luxagok.pdf
    • https://cdn-cms.f-static.net/uploads/4366984/normal_601b9f4c93518.pdf
    • https://cdn-cms.f-static.net/uploads/4478932/normal_605150ae29adf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kulekedeziwab.epizy.com/diablo_3_necromancer_wings_guide.pdf
    • http://rizugama.rf.gd/84106951103.pdf
    • http://dusameferadulo.onlinewebshop.net/jexejabuvarakaxifidif.pdf
    • https://s3.amazonaws.com/xufujofaleki/82327937789.pdf
    • http://gasanilu.epizy.com/assassin_s_creed_rogue_remastered_pc_game.pdf
    • https://s3.amazonaws.com/lomogas/appsettings_c_windows_forms.pdf
    • http://fegoluvarelewum.myartsonline.com/common_laboratory_apparatus_and_their_uses_with_drawing.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e194.bin
be737d055fdf0d40c68d343faa5346967edac6fcfac4545e80a848d452abf414		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE194 5224 bytes
font_01_sfnt_off0000f33d.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF33D 1800 bytes
font_02_sfnt_off0000fbca.bin
e77bcaf99bdcb959eff89a64d6847e4b1b72c540ced05dc673155d95c149fb5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCA 10788 bytes
font_03_sfnt_off000120e0.bin
1d4ebd634e9a4b1afc3ba2e660f7abdbad7ecfb3c20c2fb0daf688bec4f9a1d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120E0 16232 bytes

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