Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e69247fd3e70069…

MALICIOUS

PDF

84.4 KB Created: 2021-03-16 10:21:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dad273496cf4947dd0560257497034de SHA-1: 566743ef27aa560b92c2109c2fbb43aa4ae1fcdf SHA-256: 1e69247fd3e7006958e65911fb0521396dfb142c4a33f272537fcf36f662e2fb
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 0.9993

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://gimoguvi.ru/123?utm_term=android+studio+emulator++ubuntu PDF link annotation
    • http://lodixewovufosa.iblogger.org/android_project_root_folder.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/hcifhgW/safurevusisutote.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424985/normal_6032cd51dce6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420449/normal_602a3a0484450.pdfIn PDF document text
    • https://nudabixe.weebly.com/uploads/1/3/4/5/134505388/3323376.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447646/normal_5ff94a1e6cab8.pdfIn PDF document text
    • https://woruranevulabiw.weebly.com/uploads/1/3/4/0/134096732/turox-basaweboxufez-doremekewaboka.pdfIn PDF document text
    • https://dixufewopirar.weebly.com/uploads/1/3/0/7/130775961/135d1.pdfIn PDF document text
    • http://tafasizogir.22web.org/wifetisake.pdfIn PDF document text
    • https://gipofomodofomew.weebly.com/uploads/1/3/2/3/132303323/00eec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369520/normal_5fcf09b4d5e75.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/hdhejiX/mr_bullet_unblocked.pdfIn PDF document text
    • https://zavitakeji.weebly.com/uploads/1/3/4/9/134904790/jinatoluvoga-pinumoxe.pdfIn PDF document text
    • https://piturerakilapes.weebly.com/uploads/1/3/0/7/130775197/ponavezukeme.pdfIn PDF document text
    • https://buxexemap.weebly.com/uploads/1/3/4/8/134890763/pemewi_teziwoxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427529/normal_6032c7fee6272.pdfIn PDF document text
    • https://femuketidoxesi.weebly.com/uploads/1/3/3/9/133997502/cc6c78c36.pdfIn PDF document text
    • https://cdn.sqhk.co/xixofivib/fqhgyjh/paxujowenomasomorireb.pdfIn PDF document text
    • http://pipemezunowaweb.22web.org/can_you_reverse_parental_alienation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fotoburiwolof.rf.gd/do_you_capitalize_the_word_school.pdfIn PDF document text
    • http://zinigites.epizy.com/vawukagugesivof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d7f651-ebb7-464a-b847-c6de22123a4e/60111831141.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5d4570e-3a62-4c01-8e12-3a5d2fac057f/commedia_dellarte_modern_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8895eb01-28b0-4363-b350-a6b728ec8b2b/tedorugasoruseguluwo.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_off0000fa51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA51 5100 bytes
SHA-256: 35758372650fae0a6314c37f64944a2ce3c51e2e1ab577313c83811bf857900d
font_01_sfnt_off00010b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B8B 17600 bytes
SHA-256: 763bf42a1a8651b2f2304307ba17cd8e04089a19369b2ca01d89625647acf7ba

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