Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bba1e147d371d68…

MALICIOUS

PDF

73.5 KB Created: 2021-05-22 00:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 22100773884f97491f0a539158cca89f SHA-1: 250e4ab3255293c052b69fb7bfadc46b82ebbe28 SHA-256: 4bba1e147d371d68984b094f3d65ef89017d4880ce7addf342ca47ddec498078
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 0.9998

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://seumenha.ru/strik?utm_term=hack+vip+msp+sans+verification+humaine+2019 PDF link annotation
    • https://xagapetudiza.weebly.com/uploads/1/3/4/6/134686513/9804508982a412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422645/normal_60698a838dbf9.pdfIn PDF document text
    • https://ditufanavuj.weebly.com/uploads/1/3/0/7/130738569/rikiradatap.pdfIn PDF document text
    • https://mabaxezo.weebly.com/uploads/1/3/4/7/134766945/030fc92f69c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388427/normal_602d7120b8563.pdfIn PDF document text
    • https://garotilalu.weebly.com/uploads/1/3/0/7/130739336/bugumimize.pdfIn PDF document text
    • https://tubuzitobez.weebly.com/uploads/1/3/4/1/134108618/c154433ab7b0f48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_6062eaf050613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5fd81d8dddc08.pdfIn PDF document text
    • https://xiruzukigipimog.weebly.com/uploads/1/3/4/8/134865515/5610718.pdfIn PDF document text
    • https://golasokovefo.weebly.com/uploads/1/3/4/4/134490481/dad40c5d10b5e98.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/nowokil/kosapobadomepumiwox.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/lg_lfx31945st_not_cooling.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/dividends_in_balance_sheet_or_income_statement.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/93583126035.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/57903213501.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/21647937423.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/division_bacillariophyta.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/transthoracic_echocardiogram_sample_report.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_off0000e076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE076 5792 bytes
SHA-256: f090f9b298ef9e6d6c20c6902fa90b4fc62c76566ba3eabe26bbb62b2769c79e
font_01_sfnt_off0000f406.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF406 10264 bytes
SHA-256: 27e57afaa8844d662375709599ba380bd0a54490cb51bca2b07bfdbe303e30d1

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