Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed95f702aff9bc00…

MALICIOUS

PDF

95.8 KB Created: 2021-02-26 12:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 89f3113ba94e4868adee326f8c9647f5 SHA-1: da2735b18169f586735a185f5de8e5edeca48ed3 SHA-256: ed95f702aff9bc00265224e12c274656a627cc418820a5859cf4648cea614c49
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 URL that directs users to a suspicious domain, likely to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, suggests a lure related to 'computer programming language'. No scripts were extracted, but the presence of external URIs and the ML/ClamAV detections strongly indicate a phishing or malware delivery attempt.

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://bologen.ru/award?keyword=what+is+computer+programming+language+and+its+types PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403413/normal_601d5dca07d48.pdfIn PDF document text
    • https://cdn.sqhk.co/natokaze/bhesHVV/pixel_art_football_teams.pdfIn PDF document text
    • https://cdn.sqhk.co/wibetaxor/hbgihai/mexogutipatubefepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403129/normal_6029e6118cbf1.pdfIn PDF document text
    • https://migikinuxufik.weebly.com/uploads/1/3/4/6/134608510/tafetelodax.pdfIn PDF document text
    • https://xososikanezav.weebly.com/uploads/1/3/4/8/134892973/7768bcb34c6995b.pdfIn PDF document text
    • https://cdn.sqhk.co/tumupowe/elTooia/download_football_manager_classic_2015_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425237/normal_602f0e8b587ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489255/normal_60064d633928e.pdfIn PDF document text
    • https://wekosidofanepa.weebly.com/uploads/1/3/2/6/132696212/zuwawiwagelapa_kewese_bajuvavaluravo.pdfIn PDF document text
    • https://betivaronapan.weebly.com/uploads/1/3/5/3/135350750/59bb895417f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://budunasetixap.epizy.com/template_power_point_tentang_sejarah.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/doj_death_in_custody_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/sosumekomexa.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/what_are_the_different_features_of_academic_text.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/personification_worksheet_4th_grade.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11664 4016 bytes
SHA-256: 7278ed2924031f7cb48accbee7c336b7b30468630b79de79cd3589013bd2d2c1
font_01_sfnt_off00012490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12490 5600 bytes
SHA-256: 18273901c330a89a79aa7741a84451cad3470ff9f1ebbf4a62d3c5553d06c1b9
font_02_sfnt_off0001377c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1377C 10588 bytes
SHA-256: e79de9b0a6cdd7a4e2553c5de3b2637da66e3868ce81de7208b7581f98b4f5aa
font_03_sfnt_off00015bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BEA 16164 bytes
SHA-256: f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd

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