Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0dc7b96e59a286…

MALICIOUS

PDF

83.6 KB Created: 2021-03-20 01:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5c41d8d4f5da4f61b88d4ff75dd0b9a3 SHA-1: 59769144f2e5f58b183fcd7f073d246971ab2d13 SHA-256: dc0dc7b96e59a2861c5e23bd9ab6211c737476a22edacf19be4b26d6d9d012f0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/wix?keyword=ap+calculus+related+rates+worksheet PDF link annotation
    • http://mon-cmbretagne.com/suntrust_mortgage_payoff_mailing_addressdvmnb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500882/normal_600c637a41d3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423454/normal_5fef63e286032.pdfIn PDF document text
    • http://mixutadumekaje.mypressonline.com/caracterizao_da_turma.pdfIn PDF document text
    • http://24goodstore.site/f1_2018_bahrain_setup_guide1vcz6.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/adobe_acrobat_reader_protect.pdfIn PDF document text
    • http://afterdealer.pro/mbti_test_meanings31ap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420434/normal_600044b05913d.pdfIn PDF document text
    • http://gagewetero.iblogger.org/76999236237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://de2ee6d5-caaa-4265-b15c-40100ab77d99.filesusr.com/ugd/d43733_c18f801b6cfd4313ba21c7a5e12a304b.pdf?index=trueIn PDF document text
    • http://kuwitabetegipo.myartsonline.com/padojo.pdfIn PDF document text
    • http://wetovokerug.epizy.com/jobugikikupozageki.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/sg_pickguard_template.pdfIn PDF document text
    • http://meganabinas.rf.gd/powabenusuwawagow.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/speak_now_deluxe_edition.pdfIn PDF document text
    • http://bexiguxiluk.epizy.com/the_greatest_show_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/hungry_shark_world_obb_file_apk.pdfIn PDF document text
    • https://18cceff7-6d50-42ec-9d85-67184b61345e.filesusr.com/ugd/8c2e83_1ce3a341b65e49a29213399f9292dcfa.pdf?index=trueIn PDF document text
    • https://2a4df843-e27d-4a8c-8c95-00f1a368ad21.filesusr.com/ugd/b5472a_d762da9ba8ec47c881e9b87930cfe81c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gebukil/75654661198.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/82121065700.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_off0001098f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1098F 5308 bytes
SHA-256: 32e241f2faaa051216d927114003e21a108cba11097432707457f3e7639d247c
font_01_sfnt_off00011ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA4 11324 bytes
SHA-256: 0ecaf8396c30a8f3f5f67d8a3bde35b2cbf26f7498cc53ba0fd00d63599c78b5

Open this report in the interactive analyzer, or submit your own file for analysis.