Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd11caf66fda9717…

MALICIOUS

PDF

12.6 KB Created: 2015-07-15 16:25:59 +04:00 Authoring application: DOMPDF
MD5: 64c0efbcc639824ee3c17b5518165d0f SHA-1: cce932bb97eceffb127e471ca32dead86af66091 SHA-256: fd11caf66fda971731ab02f419d1b20755f8f4456b004cca8008e77d8bdd0a2c
90 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier as malicious and contains a large number of embedded external links. This suggests a link farm attack pattern, where the primary goal is to redirect users to potentially harmful websites. No scripts were extracted, and the document body contained mostly garbled text with some URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8835

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://chavagnes.com/index.php?article=1906.2&urwbo=2&pdf=1906
    • http://urbanindoorgs.com/index.php?article=450.1&lkbfl=1&pdf=450
    • http://stmarkame.org/index.php?article=131.1&qsacf=1&pdf=131
    • http://chavagnes.com/index.php?article=1824.2&urwbo=2&pdf=1824
    • http://konserborsasi.com/index.php?article=900.1&ntrdf=1&pdf=900
    • http://chavagnes.com/index.php?article=2481.2&urwbo=2&pdf=2481
    • http://castres-ski-passion.fr/index.php?article=2484.2&rpbeh=2&pdf=2484
    • http://hsaig.com/index.php?article=120.1&gpfes=1&pdf=120
    • http://www.myrlimo.com/index.php?article=2326.1&sqfkb=1&pdf=2326
    • http://chavagnes.com/index.php?article=6.2&urwbo=2&pdf=6
    • http://chavagnes.com/index.php?article=452.2&urwbo=2&pdf=452
    • http://chavagnes.com/index.php?article=1338.2&urwbo=2&pdf=1338
    • http://harmenhomes.ca/index.php?article=1455.1&wcdhp=1&pdf=1455
    • http://chavagnes.com/index.php?article=1311.2&urwbo=2&pdf=1311
    • http://www.mantrabeautybar.ca/index.php?article=2455.1&rukbv=1&pdf=2455
    • http://chavagnes.com/index.php?article=434.2&urwbo=2&pdf=434
    • http://ve-klubber.dk/index.php?article=1848.1&jzwgf=1&pdf=1848

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