Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c24b57203f3f1a0…

MALICIOUS

PDF

45.0 KB Created: 2020-03-31 01:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8a563efd34dd8f9bc5281b297bcc3625 SHA-1: a787f5ec595923d05b7704809b43484e0ed870f7 SHA-256: 9c24b57203f3f1a06f7f15bc1ceb8976edc46c2ed03bac62ee079ae8554a922d
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on different domains. The heuristic 'PDF_SEO_LINK_FARM' indicates this is a link farm, suggesting the primary purpose is to drive traffic to these external resources. The document body contains garbled text but includes a URL that is also present in the heuristics, indicating a potential lure. 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://christinabeautyparlour.com/uploads/1/3/0/6/130620579/130620579.html#formula+estructural+de+hidrocarburos+ejemplos
    • http://damascusreport.net/uploads/1/3/0/7/130775728/024847017a20b.pdf
    • http://gmholdings.org/uploads/1/3/0/8/130813466/natakelum.pdf
    • http://tradesmanscott.com/uploads/1/3/0/5/130588533/4888843.pdf
    • http://gondaragency.com/uploads/1/3/0/9/130969708/worobirokaremosuken.pdf
    • http://debtabate.com/uploads/1/3/0/5/130551257/pofal_biveratapugeke_tabafewad_xopolerenizet.pdf
    • http://bostonconadev.com/uploads/1/3/0/4/130477007/riwep-soxudukokava.pdf
    • http://nicolachiericati.com/uploads/1/3/0/5/130590043/596ccd7ee.pdf
    • http://barefootlaneclothing.com/uploads/1/3/0/6/130620603/zepur_vedesaripevinuz_pugalujunu_nawiperuje.pdf
    • http://augustaconcreteandmasonry.com/uploads/1/3/0/6/130639419/5aee02cd42ec85.pdf
    • http://simonesagency.com/uploads/1/3/0/6/130620751/nofoxug.pdf
    • http://ruggedape.com/uploads/1/3/1/4/131406140/pikurawufawexogufe.pdf
    • http://ebaytractor.com/uploads/1/3/0/8/130874180/lisewugetowolumomi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000662b.bin
65b32e458a75848b862a92855095ba9aa2f53ffe0948b804ac4c92d20de9bd56
pdf-font-stream PDF embedded font (sfnt) at offset 0x662B 8760 bytes
font_01_sfnt_off00008633.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8633 2652 bytes
font_02_sfnt_off00008f9a.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9A 16036 bytes