Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf5f861c62315a3…

MALICIOUS

PDF

78.6 KB Created: 2021-03-18 08:06:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: aa806d54968110f1bb9374e13fbf1998 SHA-1: 99857e67afa9bb8d6a7dfc1e34ab01570edc0a1a SHA-256: 9bf5f861c62315a3835cc618338e8e109bc18259ea9d8572a1316de6301d13b1
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9967

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://vilenefex.ru/strik?utm_term=how+to+use+the+mophie+juice+pack+air PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368497/normal_5ff7f3c78545d.pdfIn PDF document text
    • http://kovokibiv.22web.org/22956969201.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374847/normal_5fd62a4a38fbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426688/normal_5ff355ecbca6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467286/normal_5fcdcb6ae229b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459937/normal_5fd95a71a9b0d.pdfIn PDF document text
    • http://mogitumo.iblogger.org/sibamexetejelabopejizaba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_60207867314cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459180/normal_5ff26dc4de5c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370097/normal_5fe7843a9a021.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413575/normal_5fedd6abc7456.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421466/normal_5ff58aac1d6d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://genenapukiral.epizy.com/microsoft_excel_2016_training.pdfIn PDF document text
    • http://lewamomad.epizy.com/keytool_export_cert_pem_format.pdfIn PDF document text
    • https://e510c2d5-567e-4a96-89ff-abc18316baf7.filesusr.com/ugd/8a9bcc_262c1cd1fb35490ca7b706e6d716612f.pdf?index=trueIn PDF document text
    • https://305aa2e3-e1d2-413d-aa2e-f1bb83d03ded.filesusr.com/ugd/92ee2b_f377bc3c2f2d41bf993f5c87271cb883.pdf?index=trueIn PDF document text
    • http://lajewureju.rf.gd/cartesian_coordinate_system_worksheets.pdfIn PDF document text
    • http://gugevifuvonavir.epizy.com/47913270641.pdfIn PDF document text
    • https://ac65beef-1c88-4b01-a948-251493ed82f2.filesusr.com/ugd/09857b_895c86b927084d689d1b84a9c1e7faf0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/52133082760.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/usmc_sergeants_course_administration_answers.pdfIn PDF document text
    • https://ec75ba9f-29a7-4b73-bb51-4c951d20089f.filesusr.com/ugd/17cde0_f0430891777e41bf891efaa51cceeecb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/91143359807.pdfIn PDF document text
    • https://17a6c5a8-0587-4adf-8126-5b439e15a62f.filesusr.com/ugd/54bec1_ff516b99a0a040b189d176b46f70d52c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/fedramp_policy_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/20378110784.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_off0000f4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DA 5336 bytes
SHA-256: e26fe75f189aa2256e4b423ed3e3c704d40e265a58f4446dc9dfb690ee5e6c8e
font_01_sfnt_off000106e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E3 11084 bytes
SHA-256: bfd23390b6733c4997e65fb86fcf1bdc2cda2ea1d70b1a2cde7fbace9f4d601b

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