Malicious PDF — malware analysis report

Static analysis result for SHA-256 361a2d9594580a3d…

MALICIOUS

PDF

164.7 KB Created: 2021-03-03 10:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 59f4bef4d08c1a75d6201450324ea979 SHA-1: cdb324c7621675b30008accc6aad17623757476e SHA-256: 361a2d9594580a3db8da5069b71922f43d4b4956a9848e1f92f918dd2d88a636
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/strik?utm_term=jojo+part+7+minor+characters PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413707/normal_5fe760fde4488.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385631/normal_60035004ea13b.pdfIn PDF document text
    • http://tosatosekux.22web.org/55328601020.pdfIn PDF document text
    • https://duruzamuxe.weebly.com/uploads/1/3/2/3/132302842/d8c43e5d.pdfIn PDF document text
    • http://topcreditscore.info/dapetebibafopuwuludupv81ak.pdfIn PDF document text
    • http://grantmedica.ru/rohnert_park_petaluma_health_centerg94f8.pdfIn PDF document text
    • https://cdn.sqhk.co/pulafefer/PiiZeje/gesuzizofut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419645/normal_5fdc031d42d69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454164/normal_6028628b238bd.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/paper_bag_princess_synopsis3zhh5.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/lejivugeleguwod/lenibub.pdfIn PDF document text
    • http://matemot.epizy.com/baidu_browser_lite_apk.pdfIn PDF document text
    • http://xufizup.rf.gd/ludowik.pdfIn PDF document text
    • http://tefesapebeto.rf.gd/40763423253.pdfIn PDF document text
    • http://xizokokov.epizy.com/mukutufokimesewogugire.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/75792376750.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/47806078762.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0001cabd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1CABD 42160 bytes
SHA-256: 7e8770b29232a725f0569f7588c045ee041b12606e20a5429fc5a0830d2239b7
font_01_sfnt_off00024ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24AB6 5284 bytes
SHA-256: 04ec947f99befe74f7aa06283d544e777d1e48c48801a00d1f4375cd2a0b02ae
font_02_sfnt_off00025c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25C8F 12152 bytes
SHA-256: c31fed328d5bf2a90b2628fcc996f55ffe74394ebb769371ba87adddc6084371

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