Malicious PDF — malware analysis report

Static analysis result for SHA-256 620dbc36779b67d1…

MALICIOUS

PDF

84.1 KB Created: 2021-03-29 12:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2b971ec7965c4a6230d4d26a0c92186c SHA-1: 76edef111ce8d430769c097d4505b02aa36d5838 SHA-256: 620dbc36779b67d1c32e309cb155c737877ec7266ff4164fcf5fd379c4b7e231
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://zajinet.ru/award?keyword=camille+saint+saens+the+swan+piano+pdf PDF link annotation
    • http://vuwimoxit.mygamesonline.org/clipping_algorithm_in_computer_graphics.pdfIn PDF document text
    • http://nejamaranidirit.22web.org/stardew_fall_fishing_guide.pdfIn PDF document text
    • http://rexavomevezuro.iblogger.org/xexison.pdfIn PDF document text
    • http://gegolab.iblogger.org/circle_theorems_cheat_sheet.pdfIn PDF document text
    • http://kopalirigel.mypressonline.com/wubitizi.pdfIn PDF document text
    • http://gujozulogisin.scienceontheweb.net/remagovafijilikifez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4af149b-050c-4a0e-a417-d39224be0d9f/86941887619.pdfIn PDF document text
    • http://vunonam.atwebpages.com/winatovisetitasobobilijif.pdfIn PDF document text
    • http://totajenu.epizy.com/student_letter_of_recommendation_template.pdfIn PDF document text
    • http://sukilik.epizy.com/bls_american_heart_association.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a23e603f-acd0-4580-b8d7-ba33b0ad7db5/tedevakerapodomoj.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/android_file_transfer_driver_for_windows_10.pdfIn PDF document text
    • http://garopawugalil.rf.gd/oxford_handbook_of_clinical_hematology.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/hospital_waste_management_rules_2005.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/magigolupizopupetipe.pdfIn PDF document text
    • http://sewuxuta.rf.gd/14148872032.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/964185440.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/anemia_peru.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/bodo_video_natok_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02ee8d8f-d377-4fc6-9a00-f20d08df64a6/novasosowiforer.pdfIn PDF document text
    • http://palelezugob.onlinewebshop.net/mojabosimakilofoserol.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FD 5184 bytes
SHA-256: 501da3b1bd71dbcae537300e4dfc06c23a0eb087cb52e9b73cd2f7a860fdcc49
font_01_sfnt_off0001048c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048C 11788 bytes
SHA-256: 78618d3695b0ffc60631904c51af6366809d7867e3ac8f226cc00ffc4a840368
font_02_sfnt_off00012bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD3 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd

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