Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fd7522cc5d05df…

MALICIOUS

PDF

39.4 KB Created: 2020-06-03 20:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b0add81fe8f62b4d1e3d203c7ba4c3b SHA-1: 7a92d29f2c03691e797d9fe04c85963a0d0a9948 SHA-256: 34fd7522cc5d05df3ab929a27fe42a29655c409cd77311c4ca85bf3612779593
62 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 to other PDF files hosted on various domains, a technique often used for SEO poisoning or to redirect users to malicious content. The document body contains garbled text but includes URLs that are part of this link farm. The presence of a PDF_SEO_LINK_FARM heuristic firing strongly indicates this malicious pattern. No scripts were extracted from this sample.

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://mmhac.com/uploads/1/3/0/4/130492229/130492229.html#delaware+llc+filing+fee
    • http://womenrockjewelry.com/uploads/1/3/0/4/130476401/791973.pdf
    • http://laureneg.com/uploads/1/3/1/4/131453924/pufamil.pdf
    • http://seaweedersgardenclub.com/uploads/1/3/0/7/130775154/e0e35e02715ceb.pdf
    • http://tarasnyderonline.com/uploads/1/3/0/2/130289355/lisopov-xenagefib-gudapukinajud.pdf
    • http://embodiedmind.info/uploads/1/3/0/7/130775284/3678007.pdf
    • http://doughnut-holedc2.com/uploads/1/3/0/5/130539691/gefeda.pdf
    • http://4everything4you.com/uploads/1/3/0/6/130639152/wijonibirakak-dinitaxikar-falanotozejetat.pdf
    • http://jamesmarkets.com/uploads/1/3/0/2/130288453/futitefovuxegazumemi.pdf
    • http://mmhac.com/uploads/1/3/0/4/130492229/terms.html
    • http://mmhac.com/uploads/1/3/0/4/130492229/dmca.html
    • http://mmhac.com/uploads/1/3/0/4/130492229/policy.html
    • https://bokifib.files.wordpress.com/2020/05/36518766497.pdf
    • https://vusulawilik.files.wordpress.com/2020/05/25736594878.pdf
    • https://jilatuwim.files.wordpress.com/2020/05/51334845788.pdf
    • https://petezukonuk.files.wordpress.com/2020/06/vaberabiladanesutubideba.pdf
    • https://ragadij.files.wordpress.com/2020/06/jukemegoxewudo.pdf
    • https://delavoxurudi.files.wordpress.com/2020/06/dofufoxiromavegepowezur.pdf
    • https://xumelureda.files.wordpress.com/2020/06/reponagumalidibor.pdf
    • https://dokorutikona.files.wordpress.com/2020/06/sodanisonajosab.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_off00006cf9.bin
62f978fef315572f927816d0b60abaab761a3e12c9e4ae76acd8232188e6d3b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF9 10884 bytes

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