Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86de98e7d052a2b…

MALICIOUS

PDF

81.1 KB Created: 2021-03-21 03:53:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3250e8362ffa5293c4d14878ff558135 SHA-1: 3445198735cbe2fb1c6099673e9770adcbbc1f79 SHA-256: e86de98e7d052a2bc743bd0901f24160d949b4630afa61dc90022610a1e7f776
156 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. 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 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 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.
  • 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=lan+cable+cross+crimping+color+code PDF link annotation
    • http://nonretloli.site/barbados_immigration_department_passport_formsibus7.pdfIn PDF document text
    • http://carishr.com/sharepoint_for_dummies_2016kyiu0.pdfIn PDF document text
    • http://shopsupergood.site/best_business_management_books_to_readibqgp.pdfIn PDF document text
    • http://teksalle.xyz/78143764533f2ssw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500453/normal_5fdc4094838bf.pdfIn PDF document text
    • http://hackins.site/what_is_a_neuropsychological_batterynkirk.pdfIn PDF document text
    • http://xedijama.getenjoyment.net/mobise.pdfIn PDF document text
    • http://makebugobiwuka.mypressonline.com/revolution_2020_chetan_bhagat_free_download_hindi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465403/normal_6041f3b77f85d.pdfIn PDF document text
    • http://gajaxujifusokul.mygamesonline.org/2801197783.pdfIn PDF document text
    • http://xaredazisom.mywebcommunity.org/canvas_business_model_deutsch.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/silubebebefuju/86063458782.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/chammak_challo_dj_nyk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/pefelebirozuri.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/gumodutanekuponimejipon.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/roku_2500x_power_cord.pdfIn PDF document text
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_c02bab744ad04b2ab52c1b73cfe436c3.pdf?index=trueIn PDF document text
    • https://8084a2ae-6cfb-493d-8155-0d4219c0f7e3.filesusr.com/ugd/5b3528_aa1b9e976b1d42628e33b00cda0c3e0c.pdf?index=trueIn PDF document text
    • http://gegetebipa.atwebpages.com/nilugejo.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/ar_15_upper_receiver_dimensions.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/guwipudugebimiror.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

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_off0000fe82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE82 5476 bytes
SHA-256: 824bebac75eb3e7167a767f6673236513488805c4cc65224a9752613f4294622
font_01_sfnt_off000110ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110FF 11120 bytes
SHA-256: eff82a0127ed0721a0866d28ad6acdac983343aa21f8ed3012f88c07157248eb

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