Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a98ad49ea5aa99…

MALICIOUS

PDF

45.0 KB Created: 2020-11-07 01:12:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bd3aa156cf1289e33eecbab8675723fd SHA-1: d80877284161105c98a6aab2f5e876f81a58780c SHA-256: 09a98ad49ea5aa9937179e4ce22d41c326a80402cb753528d1e352beef95af05
96 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 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 1.0000

Heuristics 4

  • 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/123?keyword=toyota+prius+2008+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f87195dcd64c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5f8fcc338aaf2.pdfIn PDF document text
    • https://zijananuwale.weebly.com/uploads/1/3/4/4/134438714/fukiretopugajut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410441/normal_5f941aac6aef4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413002/normal_5f9815e64759e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389127/normal_5f9239952cb96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376379/normal_5fa5d7d458734.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/90f24824-40b7-48cb-9263-1dd5a0cb53c2/fp_license_plate_il.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42c31000-69ab-4d5d-ba4c-caa427e36f15/87312011377.pdfIn PDF document text
    • https://dolenukiwiwe.files.wordpress.com/2020/11/38214300416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c3cb34e-d8bf-40c9-971f-4255c8c42498/sikidisuwokanuvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d17f70-3415-402f-8f3b-ee07909048fa/gmetrix_autocad_test_2_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a14c3d4e-044b-42f6-8bcf-c04a20a73aff/14512852648.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/439269de-c44c-4de2-9c8b-816eccd5f4df/mututorilop.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_off00006f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9F 5708 bytes
SHA-256: d3d3137101327294d884ac14c89f53cefc54d49187e772e42ba251f6d49e91a4
font_01_sfnt_off000082fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FA 10728 bytes
SHA-256: 7bb08930c5b779d403d4d8df07a53f46f7a6cd9599066754fec58220eabfb0b0

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