Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9884eaa3e8c893…

MALICIOUS

PDF

65.9 KB Created: 2021-02-23 08:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 81ae290295ec812f32ff488ad0012ded SHA-1: 7373d56a140741ae0a20e835766573cd65a3be48 SHA-256: 2a9884eaa3e8c89335d6e07e7f72f3d52a42787814338e42b6a82b8e220cf576
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into downloading further malware or visiting a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit user curiosity for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=wings+of+fire+book+2+audiobook+free PDF link annotation
    • https://cdn.sqhk.co/fofateze/JkjahfK/patabifoxe.pdfIn PDF document text
    • https://cdn.sqhk.co/jokalirubore/z7eWnhj/rugby_league_2020_ladder.pdfIn PDF document text
    • https://cdn.sqhk.co/danajuva/DBIgdir/37824044454.pdfIn PDF document text
    • http://xepuvibigin.22web.org/sig_sauer_p229_sas_gen_2_40_sw_review.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/sQijgdQ/excalibur_artillery_shells_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/takoxuwal/CehjIge/tobeco_super_tank_coil_wattage.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/c51CTd5/tamogokezekegelusure.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/1GHXdni/61471378141.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/4dQihhg/alien_first_mission_gta_5.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/kezemiradigu/dingbat_game_answers.pdfIn PDF document text
    • http://dipumekamerara.rf.gd/latest_android_software_update.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/76376564864.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/74598699671.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/37630148675.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/vewirebiviwebar.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_off0000c3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3ED 5392 bytes
SHA-256: 6394282ce94597109ec6d473672bb96301e1b3ffa22299f2f89eea3f747a99a4
font_01_sfnt_off0000d667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD667 10692 bytes
SHA-256: ed1872926f7e783493019ef58dac84ce203eaa5e0fbb140252f78050fba01b97

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