Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd7a686d6d6939f…

MALICIOUS

PDF

33.4 KB Created: 2020-11-07 22:50:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ff34641a977865dc49112b6216e19c89 SHA-1: d1cd01768fc90014962347f591fe3ee0c98285f4 SHA-256: 1cd7a686d6d6939f62065d8f04d976b6669fa14bcfe4ca3155557bccaed45d30
96 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The document body and embedded links point to URLs that appear to be part of a content-luring or phishing attempt, disguised as search results. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

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://trafffi.ru/123?keyword=ang+probinsyano+june+17+2019+full+replay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403262/normal_5f9891c0e970a.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/zuxadol/filel.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/beautiful_in_spanish_language.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/22702686539.pdfIn PDF document text
    • https://gazolikid.files.wordpress.com/2020/11/94571523040.pdfIn PDF document text
    • https://nojorezidim.files.wordpress.com/2020/11/beniditatizafiwa.pdfIn PDF document text
    • https://merogiwa.files.wordpress.com/2020/11/pexoxipib.pdfIn PDF document text
    • https://fovodifikade.files.wordpress.com/2020/11/xitabuxaradozazurobuvuk.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/gta_5_apkdata_file.pdfIn PDF document text
    • https://povojoboxep.files.wordpress.com/2020/11/tavapezulilubowogepovuz.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_off000042f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42F1 5936 bytes
SHA-256: b8aff0c160970b0e4b9d48490e5e357fe92da2af25aa1b53241b205b4d505c0a
font_01_sfnt_off0000574e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x574E 9884 bytes
SHA-256: b08c60e1258e7d62655e210c2815a10aa470b46e2db9bd0b04ad65ae4dd3a51b

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