Malicious PDF — malware analysis report

Static analysis result for SHA-256 b444fc0f7ca48193…

MALICIOUS

PDF

30.2 KB Created: 2020-03-21 15:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 98a6b9d584b247ae1af95c184119947f SHA-1: 7f5c915998a26f88953154660f23b786f454d684 SHA-256: b444fc0f7ca48193d841bbf178ab44be8b631cc4ddc33415b63a855e620444c8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links to other PDFs hosted on various domains, indicating a link farm or redirection scheme. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is an attempt to manipulate search engine results or distribute malicious content through a network of seemingly innocuous documents. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://donateledfordmiddle.org/uploads/1/3/0/7/130775436/130775436.html#formacion+ciudadana+y+civica+pdf
    • http://bigblueword.org/uploads/1/3/0/6/130639380/pozoxu_zutakud_fadizevivemin_pozogilum.pdf
    • http://nloilfield.com/uploads/1/3/0/8/130873947/feremadoxim.pdf
    • http://mlmmfg.store/uploads/1/3/0/2/130289397/fotamuwukotopatofide.pdf
    • http://wickedwasted.com/uploads/1/3/0/4/130476342/xodiramijuvoveb-siwevajijifefo.pdf
    • http://www.juniorriot.com/uploads/1/3/0/4/130483320/2bce5a2ee75a900.pdf
    • http://cococarinamk.com/uploads/1/3/0/5/130544584/xotalaroguk.pdf
    • http://mail.arkfresno.com/uploads/1/3/0/5/130588686/ridabome_tegukuwaput.pdf
    • http://giantvalleyfarm.com/uploads/1/3/0/6/130621781/sojiforilupela.pdf
    • http://naviguard.us/uploads/1/3/1/1/131163690/820177cc29c4b.pdf
    • http://masteringswimming.com/uploads/1/3/0/2/130289565/971a44ef.pdf
    • http://www.beautytrendzinc1.com/uploads/1/3/0/9/130969110/lepizuxujosurepewen.pdf
    • http://horleydecorators.co.uk/uploads/1/3/0/4/130435922/dujaxululazi.pdf
    • http://www.midstateroofingandexteriors.com/uploads/1/3/0/5/130539016/7201699.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_off00005268.bin
8bc5187087ead5eff843d0f6d0a8e4c5a3376312607a923e2bcd2874c8d9dd5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5268 6416 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.