Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce6da6b86a4918b…

MALICIOUS

PDF

24.2 KB Created: 2020-03-27 02:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2a4147f38ebddda6a0a545c16801bc00 SHA-1: 859b611aefdf47927d45ef3ec45462eab9726870 SHA-256: 0ce6da6b86a4918bb4b7f100213c59c7c40788a49bc1035a95af4618da72d854
134 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. This behavior is indicative of a link farm or a redirection scheme designed to obscure the ultimate destination or to distribute multiple payloads. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://jenroncorp.com/uploads/1/3/1/4/131406274/131406274.html#amc+avenue+forsyth+12+movies
    • http://coricutit.com/uploads/1/3/0/4/130483498/kamivavedamo.pdf
    • http://www.bhcroft.com/uploads/1/3/0/8/130873718/latupoxib.pdf
    • http://rightmovecolorado.com/uploads/1/3/0/6/130621979/dafowoma.pdf
    • http://mickkok.com/uploads/1/3/0/8/130814672/820520.pdf
    • http://tianjiangguojiyulechengzhucedizhi.br3h.com/uploads/1/3/0/6/130604243/4320240.pdf
    • http://middleburyactors.com/uploads/1/3/0/7/130776836/gekofetugagi.pdf
    • http://allerdad.com/uploads/1/3/0/5/130590051/7572737.pdf
    • http://yvettesbodycare.com/uploads/1/3/0/5/130588922/gemumuzajo_gewakozoxif_tenavovokoban.pdf
    • http://boiserealestatejournal.com/uploads/1/3/1/3/131380295/60efcfced0cfab.pdf
    • http://sandiegotopdentist.com/uploads/1/3/0/5/130543261/xoluxuxeda-tebiruzinatomav-nusevagepi-kigopu.pdf
    • http://stfrancisxavier.org/uploads/1/3/0/6/130621327/sesovewokumudimikuju.pdf
    • http://dimensionalfinancialservices.com/uploads/1/3/0/7/130739311/mulikog.pdf
    • http://vertes.com.sg/uploads/1/3/0/5/130545800/debonagufexiv-peveraladodi-jelozijo.pdf
    • http://kaahafarah.com/uploads/1/3/0/5/130588248/04d9dbc507.pdf
    • http://featuredfinds.net/uploads/1/3/0/5/130539373/e9b53bdb262925.pdf
    • http://modernman.systems/uploads/1/3/0/7/130776602/bitiwa-siwisutevepor-vosolut-bewaxama.pdf
    • http://inventionk.com/uploads/1/3/0/7/130775403/rigoxijexok.pdf
    • http://southerntouchroofing.com/uploads/1/3/0/4/130494389/pegiwoniw_migetikigirak_rufob.pdf

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