Malicious PDF — malware analysis report

Static analysis result for SHA-256 4928208329f11bac…

MALICIOUS

PDF

76.9 KB Created: 2021-04-01 02:34:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2d274cf70872c341e225864be502589f SHA-1: d1b17d7fb183cc82e4d43894bb9d7b03ff85fd99 SHA-256: 4928208329f11bacb8e74a1e21d4442e4e1cbd7cc0a2a61329fe8783cadbcbc2
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to reference 'Yamaha motif 61', suggesting a lure to attract users interested in this product, likely leading to a phishing or malware download page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=yamaha+motif+61 PDF link annotation
    • https://cdn.sqhk.co/dexijonur/ghFiajb/pigifepiluxasupozira.pdfIn PDF document text
    • https://sekuruzinof.weebly.com/uploads/1/3/4/8/134897543/f34340f8370.pdfIn PDF document text
    • https://cdn.sqhk.co/vozogekom/jgiZ0je/kalilil.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/ggfpGjV/lilojalodanek.pdfIn PDF document text
    • https://livabobuladezer.weebly.com/uploads/1/3/0/8/130874084/fadagiwasezed_pumegax.pdfIn PDF document text
    • http://bikomowaxibujoj.medianewsonline.com/24804169055.pdfIn PDF document text
    • https://xukusoresi.weebly.com/uploads/1/3/4/4/134488105/bodorakojugid.pdfIn PDF document text
    • http://torixobo.mypressonline.com/isometric_view_in_engineering_drawing.pdfIn PDF document text
    • https://cdn.sqhk.co/sugezigo/ZsGyV2D/saxexowudomo.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/cgegjiT/welaruganezim.pdfIn PDF document text
    • https://zorajifedimak.weebly.com/uploads/1/3/1/4/131437130/puwetaxe_ponosasuxexuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jelunegizubu.atwebpages.com/pumadojolavob.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/luxury_hotel_collection_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fccabf7d-8605-475e-84d1-4d5300ecc3df/que_significa_la_frase_lo_que_no_te_mata_te_hace_mas_fuerte.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/169e3638-1460-4cd2-8e92-1cdf9ddf7285/zopowibekotetozululiziz.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/kawigakuxadumogoz.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/annunciation_catholic_school_uniforms.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/1636613328.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/lol_runes_guide_jungle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49cbb468-a556-4a8b-b209-8e6b9ab6dd34/lopogabovenozebejibuzuv.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/dojizozomivibikoru.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/fimobilubemorinesazinig.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_off0000f12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12C 4868 bytes
SHA-256: a2f7245cee0eb1f844a135f5161cd06aa55f7a1a5a379a46a75ce61f2199c185
font_01_sfnt_off000101a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A1 10856 bytes
SHA-256: 01a2bf032267c8f43d8520901dac8d354aeac37412ab8a4e1eaeb2eec11e6054

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