Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b83d7dec75e070…

MALICIOUS

PDF

74.0 KB Created: 2021-01-13 01:44:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: efa3cbf5ee2f94646986a786576bec71 SHA-1: 947bfdf25acf6d24cf8e5c2c3465cc8999231e38 SHA-256: 88b83d7dec75e07073f84aa76b0fa1bba1fdea19ec3d60642e18e5c736d192a5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing or trojan variant. It contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The presence of embedded URLs and the overall structure indicate an attempt to direct users to potentially harmful content, likely for credential harvesting or further malware delivery.

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://traffnew.ru/aws?utm_term=annual+report+of+reliance+communication PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f8b148170dd5.pdfIn PDF document text
    • https://jopovasido.weebly.com/uploads/1/3/4/6/134619877/takadijilexex-kigumabutokole.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426967/normal_5fa0c059ee73c.pdfIn PDF document text
    • https://detopeda.weebly.com/uploads/1/3/4/3/134305225/beverukalu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_5fe76927c6d24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419225/normal_5fb75752bebb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468836/normal_5ff2a0244dc7f.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/5227991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_5fc06db5300cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_5f938c71f037d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443821/normal_5fb6d53730510.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474450/normal_5fabfa5c56572.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391326/normal_5fe4c76cb7af7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367940/normal_5f9a03a944e68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f8750303ecd3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E7 4972 bytes
SHA-256: df971db0eaefea3d036136b9a1f9770b74ff2e8531c6db7748da82b77e82113a
font_01_sfnt_off0000f3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C3 12640 bytes
SHA-256: e2ccf4bd1daf7f2354c573ee7e2db0f7bf8ed35ea1360036f7a1b6b6063a81bd

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