Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e583eebc786fe8c…

MALICIOUS

PDF

79.8 KB Created: 2020-11-17 02:59:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 0aabea3f29e40d863469857303df1a52 SHA-1: d512898496bad98c191ee79e9ce8fadb92c6228f SHA-256: 5e583eebc786fe8c2af66309d18646be9bb7c3b76e9d48633e3c91d647c7053c
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 0.9997

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://trafffe.ru/strik?utm_term=cyberpunk+rpg+release+date PDF link annotation
    • https://nosekuge.weebly.com/uploads/1/3/2/7/132740467/fozedojipezaja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421208/normal_5fa40fef33e97.pdfIn PDF document text
    • https://ziwegakesamud.weebly.com/uploads/1/3/4/4/134468237/fediwufevozaxoserub.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/pilukane_vegezefuromi_pawonurat_puxopudofifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_5f88b7074eeae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/31ea9f6b-066d-4e65-a8a9-83cbc48cdc60/44869851830.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56be9b9-d572-4fd7-84a0-b2476223464d/3898555352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc1752bb-ebaf-4009-b8ab-4f9079f5efc9/71238791454.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/92413300931.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/buprenex_davis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f0e1d76-c779-401e-94f2-82908f8e903c/42967133872.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD9 5336 bytes
SHA-256: 5132a2e90e3990317ca64398e28e42bf30632ae6ef99a92605bcf60a6e13bdcb
font_01_sfnt_off00010209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10209 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off00010d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6D 10676 bytes
SHA-256: 9803e944458376261e025a78b169dd47f67ebd78cf64959e120cba8b6a3214a5

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