Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a936515cda304eb…

MALICIOUS

PDF

244.7 KB Created: 2021-02-26 07:46:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 53a562057c1d1287887ac230b408f8d6 SHA-1: 8e8c6f7c67e3bde4af8738564eb591f826185411 SHA-256: 6a936515cda304eb8a2f06797cb98161dc152572cdccfd083b7048e89c2ea239
96 Risk Score

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 0.9986

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/strik?utm_term=100+most+common+spanish+phrases+pdf PDF link annotation
    • https://kudaxemukuwofi.weebly.com/uploads/1/3/4/6/134691428/4ef40a56339.pdfIn PDF document text
    • https://kixofugowewo.weebly.com/uploads/1/3/1/8/131872146/tarewajes.pdfIn PDF document text
    • http://fineagencyy.com/is_gdp_a_good_measure_of_economic_growthncmur.pdfIn PDF document text
    • http://merishwheelrecords.com/app_like_internet_manager_for_android0hqp1.pdfIn PDF document text
    • https://xivafotipumi.weebly.com/uploads/1/3/4/3/134322080/rezisifulavolasitel.pdfIn PDF document text
    • https://diwujuxopawarow.weebly.com/uploads/1/3/0/8/130874606/6fa9e654e956757.pdfIn PDF document text
    • https://zaxixeresez.weebly.com/uploads/1/3/1/8/131871416/ed72a0e62c0831.pdfIn PDF document text
    • https://danaguvofuboxi.weebly.com/uploads/1/3/5/4/135401293/kaxedegar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/timeziso/xatadav.pdfIn PDF document text
    • http://tejademadubo.rf.gd/anganwadi_form_2019_west_bengal.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/demexulisowamumojukot.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/11228286648.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/sleeping_bunnies_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/jeffrey_archer_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/10th_class_date_sheet_2020_cbse.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/65865051008.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00037d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37D78 5464 bytes
SHA-256: 475fec56f1db94cd926a194b1a634e4146953757adfa055bf92a0c5d900e6a7e
font_01_sfnt_off00038fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38FE4 18192 bytes
SHA-256: 683be9a41d2d853467f7b7a9c6a9edd2a3440411dc8b05d7f9c29abd60046b8a

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