Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c74d5fcde64080…

MALICIOUS

PDF

71.1 KB Created: 2020-12-27 05:04:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 61c8068cc0d4beed72385ad9532a31b8 SHA-1: 36b70bc76a81a19b24a633808d6c36bf3c63429f SHA-256: 24c74d5fcde640806beebcc9f649b7dfa228e9c61bd8f8bbbd09640c0220abb2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, a technique often used for SEO spam or phishing. The heuristic 'PDF_SEO_LINK_FARM' specifically indicates a large number of external links, with the primary malicious URL being trafficked to a domain associated with malicious activity. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/strik?utm_term=facebook+product+analytics+jobs PDF link annotation
    • https://jukonejidar.weebly.com/uploads/1/3/4/8/134876273/57a35324cd85a0.pdfIn PDF document text
    • https://tipizilij.weebly.com/uploads/1/3/4/4/134462633/weworamubisez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459640/normal_5fdf65e70efc7.pdfIn PDF document text
    • https://kusavavatixe.weebly.com/uploads/1/3/4/8/134878613/rozegozozefapun.pdfIn PDF document text
    • https://piborubaladedos.weebly.com/uploads/1/3/4/7/134764427/guvagidufis_nefogegotuduvez_toxotute_wifik.pdfIn PDF document text
    • https://sesizapilutib.weebly.com/uploads/1/3/4/2/134266568/miruzodujejup.pdfIn PDF document text
    • https://nesipemuwazona.weebly.com/uploads/1/3/4/8/134881126/wedasuvubuwere-tirusewere.pdfIn PDF document text
    • https://bijimeko.weebly.com/uploads/1/3/4/3/134327756/favevafediwiloxe.pdfIn PDF document text
    • https://dodawuwaxa.weebly.com/uploads/1/3/4/3/134305805/bumaxezaxul_powano_solimiv.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/dinigugaxej/consonant_digraphs_worksheets_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/cute_whatsapp_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/ames_test_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/my_cashback_information._com.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_off0000da3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3E 5404 bytes
SHA-256: 4bb4e9ff34e1ce561f1d35ef2e7b70bc6af8f0090dacc1d6b9beead69c71ce22
font_01_sfnt_off0000ecb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB4 10300 bytes
SHA-256: 0b92f54a9c41c997028b6dc67e23596a786bba0605bbbecf66451b862d560cca

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