Malicious PDF — malware analysis report

Static analysis result for SHA-256 8091414dc91477f8…

MALICIOUS

PDF

29.9 KB Created: 2020-09-28 20:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e9790358012be24ad140c46169425115 SHA-1: 164b9f1a25d1b895244db98e3789fa32e3467fa4 SHA-256: 8091414dc91477f879364702c3e51d962e32389f3c1ec50c6eed9a470bf91975
94 Risk Score

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ttraff.com/pify?keyword=livro+quiromancia+pdf In PDF document text
    • https://site-1036625.mozfiles.com/files/1036625/30366447479.pdfIn PDF document text
    • https://site-1036929.mozfiles.com/files/1036929/kisusinefulajit.pdfIn PDF document text
    • https://site-1036693.mozfiles.com/files/1036693/87824700119.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/pisoselimifudojipul.pdfIn PDF document text
    • https://site-1037009.mozfiles.com/files/1037009/mevekokewufod.pdfIn PDF document text
    • http://files.deeguitar.com/uploads/1/3/1/4/131453395/zenitetewilozos_mafemifo_zofifokurizufa_bipiravewezew.pdfIn PDF document text
    • http://files.mk-bricks.ca/uploads/1/3/0/7/130776002/7957885.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5c40a366-c8bc-4456-a96a-ac5aa524e757.filesusr.com/ugd/469aea_43db05f769904fbaa4ed7a9294e1791b.pdf?index=trueIn PDF document text
    • https://eda7eef5-beec-4e84-99fd-b57cce5d959d.filesusr.com/ugd/ecec20_59aca90c14e64b43b49e4867dd2d1704.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B05 5216 bytes
SHA-256: 4d1b146f5df1c0641300739eb9ea874172155a75646dc7def91c20a4d3ab0651
font_01_sfnt_off00004cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB6 9280 bytes
SHA-256: 73626b2cea5a1b9d8dbcd77cee12f6bfd7c1ea43635b5e2a2446b3a4e710264c

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