Malicious PDF — malware analysis report

Static analysis result for SHA-256 7619c59620a44b23…

MALICIOUS

PDF

135.7 KB Created: 2021-03-18 18:14:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6301c101c31bf7fe0e7bd6044589dccd SHA-1: 674595279613ee6a932cae4363ad22ab49892a96 SHA-256: 7619c59620a44b2338d1fd91c49c14c90c629e6b278919fd30da6436dc01e2dc
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to 'geocentric theory', likely intended to trick users into visiting the malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing.

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://xezojetit.ru/strik?utm_term=what+does+geocentric+theory+mean
    • http://tokudujadi.medianewsonline.com/tennis_elbow_exercises_arthritis_uk.pdf
    • http://lotibamuzuti.scienceontheweb.net/arrl_handbook_2019.pdf
    • https://folutiniku.weebly.com/uploads/1/3/1/8/131871586/a95c0314f.pdf
    • http://peteferix.mypressonline.com/chatuchak_market_map_2020.pdf
    • https://zuginapox.weebly.com/uploads/1/3/2/6/132695273/viwipesenarajifaval.pdf
    • https://supipujijasof.weebly.com/uploads/1/3/0/7/130739476/lodoberitekuw.pdf
    • http://woxagaxizi.22web.org/wojevizaxefetif.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sazomo/sedimovifiguvidu.pdf
    • https://uploads.strikinglycdn.com/files/a973606e-c233-420e-9467-b8ce71962c10/charlie_and_the_chocolate_factory_lines.pdf
    • https://uploads.strikinglycdn.com/files/162538f5-78cb-437a-be7a-7392a2d75dd4/why_is_pre-marital_counselling_important.pdf
    • https://2dc0326d-ac60-47d8-bf46-f2dc9d334570.filesusr.com/ugd/21b4a7_7ee312f51f4d47229b26cce0b0df63b3.pdf?index=true
    • http://setovoj.onlinewebshop.net/bartaman_patrika_today_bengali_download.pdf
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_f78205ddd4364026966d4570dda8a50d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fa6e5370-7fea-43ca-baf8-46a70119c989/welosegewisokas.pdf
    • https://uploads.strikinglycdn.com/files/e9687439-07c1-4481-af4d-5a88e5941d0e/62100013022.pdf
    • https://1923692e-f727-4f58-80a8-3583160180e3.filesusr.com/ugd/c4ccc4_305ba3697f434dda842467176bd2f87a.pdf?index=true
    • http://logiwabu.epizy.com/kizixumadukojezidax.pdf
    • https://s3.amazonaws.com/tulosa/93568808508.pdf
    • http://sitejaxikezo.epizy.com/6129588406.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_off0001cbea.bin
40718cbbaa5f69fec958571d38fd7a9edce989b36008a8896163aea687722f20
pdf-font-stream PDF embedded font (sfnt) at offset 0x1CBEA 5436 bytes
font_01_sfnt_off0001de54.bin
0b089329cd04408efc1781670d6b4b93c12005b70b4f0f9844e9138eaa769f56
pdf-font-stream PDF embedded font (sfnt) at offset 0x1DE54 16508 bytes