Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb8c405216bb3ecd…

MALICIOUS

PDF

38.3 KB Created: 2020-05-22 03:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 818772456ea5f20c87ea6596f29cfb32 SHA-1: c36b561e4f0bf8c02c6d11556daa851df461f185 SHA-256: fb8c405216bb3ecd98396c1b20b6595454d29c6740c17c65e6f260cc4f0c26e4
62 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links to other PDF files hosted across various domains. This behavior is indicative of a link farm or SEO spam campaign, designed to drive traffic or potentially distribute further malicious payloads. The document body itself is largely unreadable, but the presence of numerous external links is the primary indicator of malicious intent.

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://2v4.undesirable.us/uploads/1/3/0/7/130739779/130739779.html#synth%25C3%25A8se+additive+et+soustractive+1e
    • http://ceratherm.org/uploads/1/3/0/5/130589412/getudepugir.pdf
    • http://ritetime-4kds.services/uploads/1/3/0/5/130539095/2ec9fe3.pdf
    • http://chic-antique.com/uploads/1/3/1/0/131070216/2638287.pdf
    • http://horacesung.com/uploads/1/3/1/4/131454255/bonagoxanazigiv.pdf
    • http://susiepickett.com/uploads/1/3/0/4/130478760/wowanekovur-nodaluposowejo-dakex.pdf
    • http://feralfoxes.com/uploads/1/3/0/5/130542909/99210fc6a4f8.pdf
    • http://untameddemure.com/uploads/1/3/0/6/130640172/8953891.pdf
    • http://madricelulasmadre.com/uploads/1/3/0/4/130476076/zebek-dagimuguzabumag.pdf
    • http://armentalandscapeco.com/uploads/1/3/0/7/130775682/zufasinodoled-pageg.pdf
    • http://harrelsonmech.com/uploads/1/3/0/6/130605471/dobimiwu_fajezixiwije.pdf
    • http://chrispierce.net/uploads/1/3/0/8/130874349/8450114.pdf
    • http://thehandyhelper.net/uploads/1/3/1/3/131379149/db3e7acd7b5.pdf
    • http://mycarnote.net/uploads/1/3/1/1/131164032/xopalax.pdf
    • http://alliance-homecare1.com/uploads/1/3/1/4/131406473/medel.pdf
    • http://panhandlesensoryinc.com/uploads/1/3/0/8/130813401/a77b80e71ea6b1.pdf
    • http://cretrends2014.com/uploads/1/3/0/4/130435737/texumuwogatidosite.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_off000066b2.bin
4cd8dfda73c06322ffbc4e3cd185c25dc1fc7e7ac6d43b6772d3e24b16159194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B2 11644 bytes

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