Malicious PDF — malware analysis report

Static analysis result for SHA-256 052d965763c36359…

MALICIOUS

PDF

45.0 KB Created: 2020-08-12 23:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a37b54c35b4afc856ef884ae1cd6f98 SHA-1: 362b14acf72138c032c0ecab10c5dc30c8622df9 SHA-256: 052d965763c363591b264e5456aa02dc7e4ade334db36c33fe5f72b56c750e4c
162 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to potentially malicious redirectors or link farms, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The document body, though heavily obfuscated, contains references to 'army regulation 190 11 pdf' and includes a malicious URL, suggesting a lure to download further content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=army+regulation+190+11+pdf
    • http://files.johncrosbie.com/uploads/1/3/1/4/131406082/46ad36c646.pdf
    • http://rusax.clearwaterlakemn.org/uploads/1/3/1/3/131380729/9970329.pdf
    • http://files.mvmahalo.com/uploads/1/3/1/4/131405977/aa99f96bb483591.pdf
    • http://files.realblackwolf.com/uploads/1/3/1/4/131438570/mibowukuzeteru_ronitep_jebumobisegutap_wofobinugoka.pdf
    • http://vitawije.suzannejohnsonsart.com/uploads/1/3/1/4/131412032/wudoj-zakewag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/list_of_all_formulas_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9999/6839/files/68865353083.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/ashrae_standard_90._1_si.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2103/files/quantitative_genetics_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/46000269973.pdf
    • https://cdn.shopify.com/s/files/1/0430/7307/7415/files/72771796589.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/20852540715.pdf
    • https://cdn.shopify.com/s/files/1/0429/9970/9855/files/vezamoronopakijotegis.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3229/files/zesekufadujofokeg.pdf
    • https://cdn.shopify.com/s/files/1/0447/1295/1961/files/blanchard_johnson_macroeconomics.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/23093349354.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/journaux_algerie_gratuit.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000722e.bin
f9556e3761f75fe74fa689e4683c7cd2cdb796f2bfd237e0682432d649203be7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x722E 5624 bytes
font_01_sfnt_off0000854d.bin
9d2c824cc07c0a8e653fbf9ec9f0d226f23d91b0c97c1496b6a2460465d998b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854D 9900 bytes

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