PDF malware analysis — malicious · e59120c8d4088ea2

MALICIOUS

PDF

98.9 KB Created: 2021-03-26 09:11:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9fd9e50322d389df9035dd58a16428c3 SHA-1: 58cb2f2d4c16e4b1b48cde6eb584aeb068534f44 SHA-256: e59120c8d4088ea21ff2835266a07acb189ee4098e09a1d4c2e21d490adf128a

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'soxebez.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'plant virology lecture notes'. No scripts were extracted, but the presence of external URIs and the malware classification strongly indicate a malicious intent to redirect the user to a harmful site.

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://soxebez.ru/award?keyword=plant+virology+lecture+notes+pdf
- https://cdn.sqhk.co/gunonutib/tijVxhf/wozepevijabujezebad.pdf
- http://pegamafawepodu.22web.org/85650666477.pdf
- http://dorodirebupekel.iblogger.org/9955683272.pdf
- http://gubuxuk.scienceontheweb.net/jorarenugazakogaluzisevi.pdf
- https://cdn.sqhk.co/widobixi/jdhihhz/chess_rules_knight_moves.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://vodukipezep.rf.gd/19536798823.pdf
- http://resopuz.epizy.com/assembler_image_en_en_ligne.pdf
- https://89e5ed4a-33eb-42a6-b5f1-9fc07ea1e15b.filesusr.com/ugd/ff68bb_2c4f779ee13245c89af4d72bf7d00fe7.pdf?index=true
- http://gorefoverotiw.epizy.com/lapsus_bronkopneumonia_anak.pdf
- http://pupiloxesafefiz.epizy.com/bukedoja.pdf
- http://notavopanugatog.epizy.com/roxaselakibasokufuragexe.pdf
- https://c09438b0-f1cf-4ade-afa2-d322e048c450.filesusr.com/ugd/313cc6_86da0415d61a47b78a70d858cb9fe064.pdf?index=true
- https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_45b2ca84131042d79afc45af6296e896.pdf?index=true
- http://tuguwobafadurot.rf.gd/jofenonawibasubevijos.pdf
- https://7f3dc8b3-869c-44c5-82eb-14ae88d57796.filesusr.com/ugd/dc4ca1_b758dead4a32420db23687a9219e8ddb.pdf?index=true
- http://raxegujanamefas.atwebpages.com/contoh_jurnal_ilmiah_akuntansi_keuangan.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000143ce.bin` `0dc5e5e948af7541731af7b096ecc8c0b839bfd43c957d5e5fafbcc2f3bf1162`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x143CE	5484 bytes
`font_01_sfnt_off0001569d.bin` `828fa161d057c2223321b90695bbdf6a04d51b46e702dc74f1e2b0f81773b23b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1569D	11684 bytes

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