Malicious PDF — malware analysis report

Static analysis result for SHA-256 779061e980c645bc…

MALICIOUS

PDF

49.8 KB Created: 2020-04-12 15:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 996ffed2130a6f44c7ce29df35dd2cfb SHA-1: 0c5f32f3a3c386283829af437ce5621187699783 SHA-256: 779061e980c645bc1301adc6e4077459566b814c83da95574c9ba8652b70d4ce
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, indicative of a link farm or SEO scam designed to drive traffic to external sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, suggesting the document's primary purpose is to host a large number of external links. While no scripts were directly extracted, the presence of many external links and the ML classifier's high confidence score strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://whiteeagleglobalsolutions.com/uploads/1/3/0/5/130550736/130550736.html#limites+y+fronteras+de+argentina+con+bolivia
    • http://lanelab.ca/uploads/1/3/0/6/130603852/susonizize.pdf
    • http://claireleisringbuerkcounseling.com/uploads/1/3/1/3/131380993/zebajemamesapamida.pdf
    • http://andmerchant.org/uploads/1/3/0/6/130620619/nizelidowabakoripus.pdf
    • http://westboundgermanshepherds.com/uploads/1/3/0/5/130589385/6ba63f0027cdbc.pdf
    • http://garygame.com/uploads/1/3/0/6/130620842/6812971.pdf
    • http://rokhallc.com/uploads/1/3/0/7/130739970/85f1e0110e4e.pdf
    • http://mialovesart.com/uploads/1/3/0/5/130589399/letokofavu_koxolezep_paroka.pdf
    • http://mybabybubalah.com/uploads/1/3/0/7/130775515/9525493.pdf
    • http://stevenchurchillphilosophy.com/uploads/1/3/0/4/130488153/5870082.pdf
    • http://the-bots-are-here.com/uploads/1/3/0/7/130738684/sanikewivukofako.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a00.bin
23205bd0694ba3db52a291c94b3d5d70b3dafae1101c3f7f30f10290e252ccaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A00 9016 bytes
font_01_sfnt_off00009aaf.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAF 2652 bytes
font_02_sfnt_off0000a416.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0xA416 16036 bytes