Malicious PDF — malware analysis report

Static analysis result for SHA-256 0424c7344616a639…

MALICIOUS

PDF

92.2 KB Created: 2021-03-22 12:04:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 872037751d57ecd19e1046e4c2ae50ea SHA-1: b18a5705c21a4e9554327eda54b111ae2c8db20a SHA-256: 0424c7344616a6396d9d305a924a780e16af4b0cc3d502aba85d676013dd3f23
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a phishing lure disguised as a size chart. The embedded URL likely leads to a malicious download or further infection stage. No scripts were extracted, but the PDF structure and heuristics suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=tommaso+imola+size+chart
    • http://najisemure.medianewsonline.com/vubafakazutaru.pdf
    • https://cdn.sqhk.co/liweruruzed/jjfhhjj/sanico_recycling_schedule_2020.pdf
    • http://tubipiguposazi.22web.org/81185444285.pdf
    • http://wusokamojifel.scienceontheweb.net/sofipuvafa.pdf
    • http://tuwukadinem.mygamesonline.org/dofimogoz.pdf
    • https://cdn.sqhk.co/sunidoxil/yLhaij0/minujisomoterexupizupo.pdf
    • https://cdn.sqhk.co/wanoposuj/fjcGjjK/christmas_songs_karaoke_sing_king.pdf
    • https://cdn.sqhk.co/kojetovukufo/h95hcxm/fury_road_survivor_apk_mod.pdf
    • https://cdn.sqhk.co/gegojagakexu/ihxgdjc/vomad.pdf
    • http://premiumpornclips.com/are_hard_hats_required_by_oshawn5ax.pdf
    • https://cdn.sqhk.co/xejudawadoni/jgnjjqD/32359135757.pdf
    • https://cdn.sqhk.co/lofesaxudiwo/e3gjxie/22678556836.pdf
    • http://pimebujeben.66ghz.com/api_527.pdf
    • http://fly-drive.online/what_were_artistic_developments_in_the_20th_centuries5bsip.pdf
    • http://nanolenka.xyz/xalejoze66b3n.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mafixatoje.epizy.com/alegreya_sans_font_family_free.pdf
    • http://kewetanetoza.atwebpages.com/zasetifatigubapatewuxig.pdf
    • http://fozozip.onlinewebshop.net/child_psychology_books_in_telugu.pdf
    • http://fukuselumetu.myartsonline.com/payment_services_directive_2.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_off00012c6f.bin
47d47113bd580d22ebfd3e44dc2a991e1c0542b6c5dd6d8c767fb2cdd91f03f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C6F 5040 bytes
font_01_sfnt_off00013d64.bin
0c410ea8005df12b0014fca1a68311d6aa3443ed4f24c51b5ab9644deae49535		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D64 11208 bytes

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