Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1ed4bda0882d1e2…

MALICIOUS

PDF

70.4 KB Created: 2021-02-17 12:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4ee6f036ba3a6088842490aab569c6c6 SHA-1: c3025a2e716c7741d28b04f2540fa38893900a3d SHA-256: d1ed4bda0882d1e2d3008e48a9134d56e60e08dcb1241dd6498c895260b47b7f
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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 0.8239

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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=how+to+survive+med+surg+nursing PDF link annotation
    • http://rawenspant.online/vugenaruvamusfw8qg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382408/normal_5fd225df76562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_6021ae0e188ad.pdfIn PDF document text
    • https://cdn.sqhk.co/dexizajifu/gCinwk8/mefimevumigo.pdfIn PDF document text
    • http://fdvsefwfrw.space/28939356658iw4bu.pdfIn PDF document text
    • https://gupexududoteg.weebly.com/uploads/1/3/5/3/135302954/zoxofuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_60178f2f781b7.pdfIn PDF document text
    • https://watinamubil.weebly.com/uploads/1/3/0/8/130813586/7832700.pdfIn PDF document text
    • http://pitushok.space/fufuluvitcf9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_600e89340a94c.pdfIn PDF document text
    • http://digitalmicroteter.xyz/ledubixuxh9.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/pazerogasarinu/blank_certificate_of_recognition_templates.pdfIn PDF document text
    • http://zolewari.rf.gd/bach_cello_suite_no_1.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/marmoleum_linoleum_vs_sheet_vinyl.pdfIn PDF document text
    • http://fivemawafazixi.epizy.com/47116903851.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/gosugawoxavoz.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF839 5016 bytes
SHA-256: cec25b761de658bb5f770b90fabed504e48d265919cd72b2b0a215a5a094bf2f

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