Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e539f109da54352…

MALICIOUS

PDF

74.0 KB Created: 2021-05-03 12:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52d84777805476f9e0810d276ed1dab4 SHA-1: 706076d8341f476e2550da09d8ba315e6f092528 SHA-256: 9e539f109da54352251b7016d42adc67ad611db3e053c119a5939be678e52102
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://resalured.ru/strik?utm_term=what+types+of+jobs+are+in+operations, is likely part of a phishing or social engineering campaign aiming to trick users into clicking it. The document body, though heavily obfuscated, suggests a lure related to job opportunities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/strik?utm_term=what+types+of+jobs+are+in+operations
    • https://static.s123-cdn-static.com/uploads/4492286/normal_5fccfc3f259c1.pdf
    • http://sunugukumota.getenjoyment.net/3500979925.pdf
    • https://cdn-cms.f-static.net/uploads/4416938/normal_600b7bd06ac8a.pdf
    • https://wulapoledonuker.weebly.com/uploads/1/3/2/6/132695240/sominebididow.pdf
    • https://cdn-cms.f-static.net/uploads/4422373/normal_605dda635a445.pdf
    • https://pedagojewixa.weebly.com/uploads/1/3/1/3/131398360/9f0068ff9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://288dffde-0386-48bd-adba-b069b5f3b70f.filesusr.com/ugd/7e1b39_2e68f47b93fd402bacfe9d520b31e45e.pdf?index=true
    • http://kofaxafogi.myartsonline.com/which_is_better_janome_or_husqvarna.pdf
    • https://s3.amazonaws.com/mixanaz/adblock_plus_free_for_windows_8.pdf
    • https://78de399b-5cb1-4d05-8290-e7933402b20f.filesusr.com/ugd/10f998_88a6a6e936254b8980d2abba6b8b2c54.pdf?index=true
    • https://s3.amazonaws.com/jotizifime/the_velocity_field_of_a_flow_is_described_by.pdf
    • http://sunivope.rf.gd/3d_images_hd_wallpaper.pdf
    • https://s3.amazonaws.com/remuv/82230548124.pdf
    • https://434dcbc4-7bd9-40fe-99bf-e102daebf961.filesusr.com/ugd/07ef24_dc9c1036a0254139a94e2aba9c1ed337.pdf?index=true
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_a39aa592e7904145a70580ef52928d24.pdf?index=true
    • http://vumamuv.myartsonline.com/wetesuxejegadodepal.pdf
    • https://s3.amazonaws.com/xovekolamoxe/canoscan_9000f_mark_ii_driver.pdf
    • http://mepumubim.rf.gd/sigedexixerumajezupevex.pdf
    • http://zugaxolitefupip.epizy.com/15858575361.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_off0000e473.bin
fba224c90ce6a748accfa5a417e40621cfe82d5c07b1ace24997b74b16987baa
pdf-font-stream PDF embedded font (sfnt) at offset 0xE473 5288 bytes
font_01_sfnt_off0000f681.bin
577aeb361deaa6069b8d7c69575afc5f9119166167b5d3b39719c72442ec6c66
pdf-font-stream PDF embedded font (sfnt) at offset 0xF681 10536 bytes