Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e9a1845817d734…

MALICIOUS

PDF

34.7 KB Created: 2020-06-12 18:56:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 964954c53016f7b34e51dfa3b39c09a6 SHA-1: cd6c0df5b0401c0c8d48fde576e848260147e22e SHA-256: 28e9a1845817d734a1cd6b4579949e2401257667d2c6e16df3aa0f2b001f1c3a
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, many of which point to other PDF files hosted on suspicious domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm. The embedded URLs and the document body text, though partially garbled, suggest a lure related to web operations. The primary purpose appears to be directing users to a network of external sites, likely for malicious purposes such as phishing or malware distribution.

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://mta-sts.mx.akimhemangcdc.org/uploads/1/3/0/2/130272921/130272921.html#html+ile+basit+web+i%25C5%259Flemleri+%25C3%25B6zet
    • http://gusdiner185.com/uploads/1/3/1/1/131164198/laziwik_vimubap_xevebog.pdf
    • http://zuperkart.co/uploads/1/3/0/4/130435819/dopenonutobarovam.pdf
    • http://vansrv6a.com/uploads/1/3/0/5/130542977/dadegogi.pdf
    • https://budedugis.files.wordpress.com/2020/06/rividexelidajudemed.pdf
    • https://dixurozazix.files.wordpress.com/2020/06/muwojijerujuba.pdf
    • https://liramezir900933771.files.wordpress.com/2020/06/44224076437.pdf
    • https://jutunebajo.files.wordpress.com/2020/06/66664086847.pdf
    • https://buluzoti.files.wordpress.com/2020/06/naxabofosidavawiwamomoku.pdf
    • https://lawikisuj.files.wordpress.com/2020/06/50964004751.pdf
    • https://fivulenis.files.wordpress.com/2020/06/17426763092.pdf
    • https://bokozosu490224201.files.wordpress.com/2020/06/nunizuzevujumale.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_off0000516d.bin
2d84ae0636942eb5063defe9e2f34a76032a15a437a22af272f09e81a5429577		 pdf-font-stream PDF embedded font (sfnt) at offset 0x516D 1528 bytes
font_01_sfnt_off0000592f.bin
5b08203d9811f96ddba3b7dc800951f5e6ecd6168f775551d8432bf4279423cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x592F 11284 bytes

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