Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b94881c1856fcd…

MALICIOUS

PDF

72.9 KB Created: 2020-11-19 08:20:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e15c2a7f333ac44006bede50ea781281 SHA-1: b1423f47004540bc0955efd7a530514b40c7a065 SHA-256: 80b94881c1856fcd736f8cf6e980bab4506280eb3e86c798a6bc4cd03be31b43
156 Risk Score

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://traffnew.ru/strik?utm_term=edsel+ford+model+40+special+speedste PDF link annotation
    • https://dopikilazobowu.weebly.com/uploads/1/3/4/4/134488506/2b4ac0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vufupu/disepijosepesitozonefis.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/ser_bachiller_junio_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/magdalena_ecke_ymca_adventure_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/66480476233.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/1664025950.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/gipijakitevudotixig.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/fe2_to_fe3_oxidation.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/acquisitions_incorporated_tg.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/calculus_third_edition_finney_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/52559029104.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/vscode_default_javascript_formatter.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/notudaxagesikanode.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
font_00_sfnt_off0000d307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD307 5172 bytes
SHA-256: 3fc3a77e234567d69f08d47b1f55a0cebd89b15b694aaccf95de2b6137d05068
font_01_sfnt_off0000e49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49A 10632 bytes
SHA-256: 4ab21cf2681190eae67ceb12a391dd07de068f6fdd03633d4b483f0ecd1a6c91
font_02_sfnt_off000108cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CD 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.