Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa4350c39280fe0…

MALICIOUS

PDF

37.9 KB Created: 2020-04-30 18:38:08 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4a431bde43d88a8d026845a2a3d2534c SHA-1: f3698f240cfca3ae848942d629355a9b0720772d SHA-256: caa4350c39280fe021dba958aa9c0d3803d16d846c2935c738236d247f7f7ca9
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, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The document body is heavily obfuscated and contains some of the same URLs, reinforcing the link farm nature of the file. 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://uxwcdconference.com/uploads/1/3/0/6/130604575/130604575.html#clip+art+page+border+free
    • http://g2gtraining.net/uploads/1/3/0/9/130969631/wiwepupukizuso_lepuxo.pdf
    • http://hire-display-boards.com/uploads/1/3/0/7/130739480/kefam.pdf
    • http://kennebunkportlodging.com/uploads/1/3/0/4/130436054/xojejeritiwusuguj.pdf
    • http://thecookiieeejar.com/uploads/1/3/1/4/131452977/rilosivoz_moripi_tawokeb.pdf
    • http://emdrweb.com/uploads/1/3/0/2/130288421/kujuz.pdf
    • http://californiaspac.com/uploads/1/3/0/9/130968942/povaxi.pdf
    • http://latina1059fm.com/uploads/1/3/0/9/130969740/rikiluxozi.pdf
    • http://loveandwar.blog/uploads/1/3/0/6/130639541/3045537da40f4.pdf
    • http://visitthepreserve.org/uploads/1/3/0/5/130588568/6758809.pdf
    • http://originwireless.io/uploads/1/3/0/5/130589442/gudozidu_nusimoledami_vibajawewatuw.pdf
    • http://radiantalchemywellness.com/uploads/1/3/0/7/130739593/sulemape.pdf
    • http://more-beautiful.com/uploads/1/3/0/7/130739303/kexodosarevisunumu.pdf
    • http://redwinnewnotebooks.com/uploads/1/3/0/2/130274028/razixe_vuvefezegis_xuloga.pdf
    • http://psi-joint-integrity.com/uploads/1/3/0/6/130639467/3586101.pdf
    • http://tjdhealthcare.com/uploads/1/3/0/6/130603874/1312379.pdf
    • http://baymill-aramasset.com/uploads/1/3/0/4/130475879/xerebofazobig_xigilup_vomexumup.pdf
    • http://schuimparty.nu/uploads/1/3/1/3/131379578/duzigomaramewed.pdf
    • http://friendsofalangreen.org/uploads/1/3/0/2/130291561/vulovurajivutu.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_off00006d72.bin
d9fe6559eb83c05a1e0b927024ec0071eaeedcec2fed34e6c211941342c4c3ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D72 7648 bytes

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