Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5cfbc215fc1272c…

MALICIOUS

PDF

34.6 KB Created: 2020-04-03 16:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7abdb05870ca9095d32b94e9b26b6669 SHA-1: 733c2cd2e01f2e19700fe93ed11de3550321d183 SHA-256: e5cfbc215fc1272c36a1edc855a15734a78fe1fa00a709cc08d0a72ba1d53888
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a significant number of external links, many of which point to other PDF files hosted on various domains, indicating a link farm. One of these links, 'http://dhopewell.com/uploads/1/3/1/4/131453453/131453453.html#el+lazarus+efecto+sam+parnia+pdf+lib', is directly embedded in the document body. The presence of a 'download button' heuristic further suggests a lure to download a malicious payload. The overall structure points to a phishing or social engineering attack designed to trick users into visiting malicious sites or downloading malware.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://dhopewell.com/uploads/1/3/1/4/131453453/131453453.html#el+lazarus+efecto+sam+parnia+pdf+lib
    • http://garrettotahair.com/uploads/1/3/0/5/130588676/suvixonaxapud_pivoxagol.pdf
    • http://dbvamp.com/uploads/1/3/1/4/131405977/bbf75f5a3.pdf
    • http://totalkidsparty.com/uploads/1/3/0/9/130969205/nefiboxaxamumepazu.pdf
    • http://experienceclinic.com/uploads/1/3/0/5/130544541/ce853262e0002c.pdf
    • http://brickalation.com.au/uploads/1/3/0/4/130476076/05df1.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_off00006092.bin
32cb17e2be45d07207bb325ee095063a2d8b9eeb2f65317778181360bae67a58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6092 7544 bytes

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