Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97e862d118f54c7…

MALICIOUS

PDF

103.0 KB Created: 2021-02-16 23:51:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e2286be859a9419c1c3658ffb26e75b7 SHA-1: 51b9f8393230be5bd152fc41ff1594e2705df67c SHA-256: e97e862d118f54c7234977af511d554a9b69836f0ede3e5e15c7230d560707be
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an invoice-themed lure. 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 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://druttle.ru/123?utm_term=en+que+consiste+el+sistema+de+contabilidad+de+costos+por+ordenes+especificas PDF link annotation
    • https://guzuwifaxad.weebly.com/uploads/1/3/4/0/134096987/fesetedux.pdfIn PDF document text
    • https://ranalugepileli.weebly.com/uploads/1/3/4/7/134735155/rizib-galabotunoxilix-safuguv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445107/normal_5ff3f12516120.pdfIn PDF document text
    • https://suguturame.weebly.com/uploads/1/3/1/4/131438741/fexavi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492900/normal_60045d40795af.pdfIn PDF document text
    • https://sugasukeni.weebly.com/uploads/1/3/4/8/134878852/dojafidoso.pdfIn PDF document text
    • https://bitojobuf.weebly.com/uploads/1/3/4/8/134892495/sapubowarol-reledamom-fuvopiremeriruw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421612/normal_5feda4eae77e5.pdfIn PDF document text
    • https://sesuxaned.weebly.com/uploads/1/3/5/3/135349378/nezifinowukelow_wilafus_xerufepow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482191/normal_602063b58d9f9.pdfIn PDF document text
    • http://goldstein.berlin/xarem6iead.pdfIn PDF document text
    • https://jokanile.weebly.com/uploads/1/3/5/9/135962808/9673078.pdfIn PDF document text
    • https://vivuwugo.weebly.com/uploads/1/3/0/9/130968913/dumewakawavasilup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393193/normal_60034f386d929.pdfIn PDF document text
    • http://geniusenglish.space/xaridifig2afy.pdfIn PDF document text
    • https://gexokatex.weebly.com/uploads/1/3/5/9/135960098/4399748.pdfIn PDF document text
    • https://petivevidimow.weebly.com/uploads/1/3/0/8/130813859/xifowuvakeg-waditus.pdfIn PDF document text
    • http://ninujovapazolo.iblogger.org/38363624789.pdfIn PDF document text
    • https://rotaxavevun.weebly.com/uploads/1/3/4/8/134884867/4795950.pdfIn PDF document text
    • https://katalulipof.weebly.com/uploads/1/3/2/7/132710678/1917559.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001504f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1504F 5524 bytes
SHA-256: a2f087f52c7d24b513a6266f1fb2a5022b7dd33b4d46f107586da337af4fe16b
font_01_sfnt_off000162fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162FA 12672 bytes
SHA-256: 947c838263500d9c7cb997e3abb148752009f7bfefdb426e91595fcff6d2072a

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