Malicious PDF — malware analysis report

Static analysis result for SHA-256 4505b21d6f9c1774…

MALICIOUS

PDF

42.2 KB Created: 2020-03-29 11:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 41f5e72193ca95849d73cd6b5ce32360 SHA-1: caeff1a657236178e016179c830c3c17ac2a73ec SHA-256: 4505b21d6f9c1774497cff5ff97bdfddf9287175b2684dde13367caab7bc6e7e
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or SEO spam campaign. The document body, though partially corrupted, contains the title 'Mapa conceptual de vitaminas' and references wkhtmltopdf, indicating it was likely generated programmatically. The primary goal appears to be directing users to a vast collection of other PDF files hosted across numerous domains.

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://lennoxweb.com/uploads/1/3/0/8/130874526/130874526.html#mapa+conceptual+de+vitaminas
    • http://violetnclaire.com/uploads/1/3/0/3/130313632/vupugetegakixu.pdf
    • http://totalgreenpestprevention.com/uploads/1/3/0/7/130739626/1838401.pdf
    • http://kimcharbonneau.com/uploads/1/3/0/7/130776523/6974033.pdf
    • http://sarahobenauf.com/uploads/1/3/1/1/131164012/kanasekaderal.pdf
    • http://acpgroupe.com/uploads/1/3/0/7/130776564/dasizabujez.pdf
    • http://santodomingoenvivo.com/uploads/1/3/0/5/130551656/banolaf.pdf
    • http://fishnyak.com/uploads/1/3/0/7/130739663/947da.pdf
    • http://alearaephoto.com/uploads/1/3/0/5/130547116/lawematekizisij_fotuvoxiwokofo_simujesag_kiweweka.pdf
    • http://sleepingwiththepresidents.com/uploads/1/3/0/2/130287882/1e664a.pdf
    • http://tackletote.com/uploads/1/3/1/0/131070089/0c61f5.pdf
    • http://roofingpros-stpetersburg.com/uploads/1/3/0/5/130589339/gutar_momagusu.pdf
    • http://dcanic.com/uploads/1/3/0/8/130814014/samoseve.pdf
    • http://bradburyclothingco.com/uploads/1/3/0/4/130483980/4aaf50.pdf
    • http://hygenierocks.org/uploads/1/3/0/3/130379431/9db6d892d71f2c3.pdf
    • http://friendsnorthcreekforest.net/uploads/1/3/0/6/130604723/buxes.pdf
    • http://resinexchange.com/uploads/1/3/0/3/130324004/vumugezeforow.pdf
    • http://mymerits.org/uploads/1/3/0/5/130550796/getabozavuxexos-migokotugiwer.pdf
    • http://christieschuelerphd.com/uploads/1/3/0/3/130323585/jurazup_musuduferud.pdf
    • http://eslawrence.com/uploads/1/3/1/3/131381302/7970319.pdf
    • http://www.spadaforabibite.com/uploads/1/3/0/4/130490386/89c18f8edb5746.pdf
    • http://thesummitmontana.com/uploads/1/3/0/2/130288554/pevelutomawuguwi.pdf
    • http://scdesigngroup.com/uploads/1/3/0/8/130874015/7281641.pdf
    • http://triplexcare.com/uploads/1/3/0/4/130478307/3100278.pdf
    • http://icg-isaacconsulting.com/uploads/1/3/0/6/130640013/2cf78.pdf
    • http://destinationenvp.com/uploads/1/3/0/4/130436085/maduka_biwekusavo_jopikezegukave_dudumupizasis.pdf
    • http://destinationenvp.com/uploads/1/3/0
    • 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_off00007b4d.bin
49be64ae93ee8b9a7385587a3733d82574703b64431881dc67ed5b6181d11340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4D 8288 bytes

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