Malicious PDF — malware analysis report

Static analysis result for SHA-256 a624f146c49dd623…

MALICIOUS

PDF

11.5 KB Created: 2015-07-16 23:08:43 +04:00 Authoring application: DOMPDF
MD5: c61b56528511d64d46457437bcaf63d5 SHA-1: 8af5615c3602f5cec3fd6525c469a723b00d20e8 SHA-256: a624f146c49dd62308b00cead89d3e996f957b623604cc4aaa2a031c6666e46c
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to various domains, indicative of a link farm. The ML classifier also flagged this PDF as malicious. The document body, though partially obfuscated, contains text related to forex trading and includes many of the same URLs found in the link farm. The primary attack pattern appears to be directing users to external sites, potentially for SEO manipulation or to serve further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9282

Heuristics 2

  • 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.
  • 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://anbita.com/index.php?article=1083.2&kqofn=2&pdf=1083
    • http://whereabouts.eu/index.php?article=129.3&jhfbh=3&pdf=129
    • http://immofina-solutions.com/index.php?article=2335.2&nudes=2&pdf=2335
    • http://anbita.com/index.php?article=879.2&kqofn=2&pdf=879
    • http://amicosmeceutici.it/index.php?article=920.1&replv=1&pdf=920
    • http://anbita.com/index.php?article=1805.2&kqofn=2&pdf=1805
    • http://shoppinga.it/index.php?article=1037.2&rsrwa=2&pdf=1037
    • http://www.mantrabeautybar.ca/index.php?article=2356.1&rukbv=1&pdf=2356
    • http://www.myrlimo.com/index.php?article=1052.2&lyktj=2&pdf=1052
    • http://anbita.com/index.php?article=2390.2&kqofn=2&pdf=2390
    • http://anbita.com/index.php?article=685.2&kqofn=2&pdf=685
    • http://anbita.com/index.php?article=1596.2&kqofn=2&pdf=1596
    • http://marche-espoir.org/index.php?article=1587.7&ilesi=7&pdf=1587
    • http://anbita.com/index.php?article=1334.2&kqofn=2&pdf=1334
    • http://vioval.eu/index.php?article=793.1&irrir=1&pdf=793
    • http://anbita.com/index.php?article=1829.2&kqofn=2&pdf=1829
    • http://cocoonin.fr/index.php?article=1645.1&ybtii=1&pdf=1645

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