Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7972bfdc10788de…

MALICIOUS

PDF

33.2 KB Created: 2020-04-05 04:53:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 26b0e11ea0e8ea6a73019cba60948f03 SHA-1: 760648ef0b26def2b162dda26976869f0429a47f SHA-256: c7972bfdc10788dee38c48c070b3ab62eda3e96c5e0388fa6305717b24e08ab3
156 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Dropper.Agent-8898833-0 and the ML classifier assigned a high probability of maliciousness. The document contains a large number of external links, many of which point to domains that appear to be part of a link farm, suggesting a deceptive or malicious purpose. The embedded URLs are likely used to redirect users to phishing sites or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8898833-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8898833-0
  • 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://straightpipeexhaust.com/uploads/1/3/0/6/130604630/130604630.html#beats+by+dre+wireless+connect+to+pc
    • http://leightondelmia.com/uploads/1/3/0/6/130604905/tofiseruzibu_juxajevewuximi_muwopokakuru_kawamofewo.pdf
    • http://jansostylish.com/uploads/1/3/1/4/131437983/pimet.pdf
    • http://blitzthetraffickers.com/uploads/1/3/0/5/130542865/wavazigebi-leduwewepobibi-povenojekosinof.pdf
    • http://rayraypainting.com/uploads/1/3/0/5/130541597/3586094.pdf
    • http://cvilleticn.net/uploads/1/3/0/4/130476513/welosekifejeg.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d49.bin
de6aacb5a55f55b98bf3ae384f96a51051c900e5a59c241f5198d539ce1a3af5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D49 6168 bytes
font_01_sfnt_off00005cad.bin
3d6b61d671b42ce26d08865a4efd65ee62df6da8c1e65160c7b6e5074be534d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAD 6800 bytes

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