Malicious PDF — malware analysis report

Static analysis result for SHA-256 2454235f151bb2c0…

MALICIOUS

PDF

68.0 KB Created: 2020-05-18 01:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572bc76ffd5526b3234fa787919a1930 SHA-1: bee7ed164f91346d48cc4195c2d5afafe1d233c1 SHA-256: 2454235f151bb2c091c8668a909651676c3406e4abee111bd2f25217cf6ded6b
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. One of the embedded URIs points to an HTML file that also contains a list of these linked PDFs. This suggests a coordinated effort to distribute content or manipulate search engine results. No scripts were extracted from this sample, limiting the ability to determine a specific payload or execution method.

Heuristics 3

  • 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
  • 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://moneytipmonday.com/uploads/1/3/0/6/130604241/130604241.html#audio+books+urdu
    • http://inwardvoyage.net/uploads/1/3/1/0/131070202/ca31ecbb73a.pdf
    • http://manythreadsconsulting.com/uploads/1/3/0/8/130815303/d80bf51ff0.pdf
    • http://audax-iscte.com/uploads/1/3/1/6/131606133/gazupopafoluvebosiki.pdf
    • http://chookshedstudio.com/uploads/1/3/0/4/130476122/991f354073d.pdf
    • http://teaganroseactress.com/uploads/1/3/0/7/130739535/nebatizerekevexodot.pdf
    • http://managerasateamnavigator.com/uploads/1/3/0/6/130620520/tijure.pdf
    • http://joinocms.org/uploads/1/3/1/8/131857144/vonaxitudix.pdf
    • http://preschoolkaty.com/uploads/1/3/0/8/130874389/jagujivavisupaso.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
stream_003_off0000d65a.bin
9a55c38130e84fcb9725297e36cc9dd5b3f374a05b097f6ecae5672b4023f7c4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD65A 27804 bytes
font_00_sfnt_off0000b317.bin
528c51f942aac09bf41341b976731a6a9d2dfa1828d4b849ffe1e4c5d26779ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB317 10456 bytes

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