Malicious PDF — malware analysis report

Static analysis result for SHA-256 537709323a702a1e…

MALICIOUS

PDF

36.9 KB Created: 2020-06-08 02:50:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 321d117d89f5b50af63fd7094eae0c10 SHA-1: c7112ac2098de503e58ef17cc9793d3bbe97f70f SHA-256: 537709323a702a1e4a445e7cad9cf38381271de2568aa354269e536367dc9e6a
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body also contains URLs, including one that appears to be a lure for 'airconsole.com'. The primary attack pattern involves directing users to a link farm, likely for SEO poisoning or to distribute further malicious content. No scripts were extracted from this sample.

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 http://integratedpoliticalstrategies.com/uploads/1/3/0/6/130604133/130604133.html#www.airconsole.com+tv+el+c%25C3%25B3digo
    • http://zest4work.com/uploads/1/3/1/1/131164549/doxalevowatex.pdf
    • http://ts-cosmetics.com/uploads/1/3/1/4/131437430/vadasegu_menetebud_tolimorap_sebodewutiga.pdf
    • http://grillpublic.com/uploads/1/3/0/6/130604027/e5546b2494.pdf
    • http://postmaster.tachimachi.net/uploads/1/3/1/1/131164437/e13a9f5cf165e.pdf
    • http://mta-sts.redrockpilates.com.au/uploads/1/3/1/6/131606563/vokemamujabafex.pdf
    • http://jimmycjones.com/uploads/1/3/1/1/131163617/1004401.pdf
    • http://finfrockaviation.com/uploads/1/3/0/4/130488152/silimotad-wulagaxum.pdf
    • http://methowbase.com/uploads/1/3/0/9/130969809/3205297.pdf
    • http://elevehomesbaguio.com/uploads/1/3/0/4/130477372/pataxoxosage.pdf
    • http://stitchingkisses.com/uploads/1/3/1/6/131606121/zogulexuk-deduvem.pdf
    • http://woning-keuren.nl/uploads/1/3/0/4/130478935/2003656.pdf
    • https://jebemoma.files.wordpress.com/2020/06/42578474328.pdf
    • https://sifuloli.files.wordpress.com/2020/06/kuvomopowarelipukepa.pdf
    • https://xiwixiligut.files.wordpress.com/2020/06/9200716797.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000610e.bin
24b8fe53a34042b53d97f6b013cb7eda522f5d878308a69bfe010da72189a0d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610E 11252 bytes

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