Malicious PDF — malware analysis report

Static analysis result for SHA-256 412a5b6442cc9a39…

MALICIOUS

PDF

140.7 KB Created: 2021-05-03 19:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62694a22072f20f52eccb26ac282101a SHA-1: aa7d39c841a96f06afb677100fa51b8fda42a53b SHA-256: 412a5b6442cc9a394789fb53faa50e8203d368def74bbe8fe181822553e3f236
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to the 'schrodinger wave equation', likely a lure to disguise a phishing attempt. The embedded URL `https://seumenha.ru/strik?utm_term=what+is+the+solution+of+schrodinger+wave+equation` is the primary indicator of this phishing lure, aiming to redirect the user to a malicious site.

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=what+is+the+solution+of+schrodinger+wave+equation
    • http://instacopyrighthelpteam.com/total_english_elementary_students_book_free_downloadki6jj.pdf
    • http://obzorov.site/favesuxofivadupoxutetdwxe.pdf
    • https://cdn.sqhk.co/fekoguwiwu/XyrWiap/tagiputebafixixutega.pdf
    • https://cdn.sqhk.co/losomilodip/Cnqjaen/28559538208.pdf
    • https://cdn.sqhk.co/dijabidasu/IpiaWuU/zujuvifisexowufised.pdf
    • http://idealicagocce.site/dolisexumavepexowumuridekut.pdf
    • https://cdn-cms.f-static.net/uploads/4488323/normal_5fe6ed28359d2.pdf
    • https://cdn.sqhk.co/kizofapekeku/vhmtjhq/journal_with_lock_for_girl.pdf
    • http://idealica-official-it.website/21568116484h4dc1.pdf
    • https://cdn-cms.f-static.net/uploads/4382948/normal_6013396f2c0a9.pdf
    • https://cdn-cms.f-static.net/uploads/4368485/normal_600addc2dd57a.pdf
    • https://cdn.sqhk.co/monubinejon/aPgfjiP/mhsaa_basketball_free_throw_rules.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b6142d6b-ceab-497a-8aef-2791e13ee125/sizevufotorereseborab.pdf
    • https://uploads.strikinglycdn.com/files/2ccb18c0-2973-4219-96ea-e8fd20b65151/2004_craftsman_gt_5000_owners_manual.pdf
    • https://uploads.strikinglycdn.com/files/74a68633-330f-4f25-989a-710c80a9eb37/kagaj.pdf
    • https://s3.amazonaws.com/lizuseguwix/88305010077.pdf
    • https://uploads.strikinglycdn.com/files/88ebdc52-4843-4124-99ab-8bc1edc6b1f5/79742352890.pdf
    • https://uploads.strikinglycdn.com/files/bf0f4a12-370c-43d4-8b1f-ed114533aae2/tivewifanedo.pdf
    • https://s3.amazonaws.com/selivuvumepaveb/fumetabi.pdf
    • https://s3.amazonaws.com/zidenigad/pineapple_palm_tree_information.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c66c.bin
643aadc9331e38852ef274882a677955cc7d7ddc0a4b445a15b347ce8dbe476d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C66C 5576 bytes
font_01_sfnt_off0001d96d.bin
75d6c8fc8a6d03f8d8762224593a7cb3f461e531726a0ff9baa73d86c3401eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D96D 15476 bytes
font_02_sfnt_off00020d15.bin
491af0e4613fd67a56dfb5b7bc4525eeb9f38e787f696d3ef01f035b9a06686b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20D15 16616 bytes

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