Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25a61634bebdb9a…

MALICIOUS

PDF

16.4 KB Created: 2019-05-01 18:35:34 +01:00 Authoring application: mPDF 5.7
MD5: 02b7dc90dbb005000b19edf02c5f3fad SHA-1: c227bd16384155fcc117ffe30910c1d0993ef057 SHA-256: e25a61634bebdb9afbb696067844379715db138472e65086ca8d845339a4b196
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links to external PDFs, forming a link farm. This is indicative of a SEO poisoning or spamming campaign designed to drive traffic to malicious or low-quality content. The ML classifier also flagged this PDF as malicious with a high probability. No scripts were extracted, and the document body primarily consists of repeated URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://loaminoo.linkpc.net/6094095099096095/Heart-of-Darkness-Unabridged-Deluxe-Edition-An-Early-Modernist-Novel-From-the-Author-of-Nostromo-Lord-Jim-The-Secret-Agent-and-Under-Western-Eyes-Memoirs-Letters-amp-Critical-Essays-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/8091097091093093/Heart-of-Darkness-by-Joseph-Conrad-Illustrated-Heart-of-Darkness-1899-is-a-short-novel-by-Polish-novelist-Joseph-Conrad-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/6095091098099099/Heart-of-Darkness-Joseph-Conrad-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/1090095096097093090/The-Joseph-Conrad-Collection-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/4094093093091092/Amy-Foster-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/2092095097099095/The-Mirror-of-the-Sea-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/6098098098098/Youth-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/3097091091093092/The-Duel-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/1090096090091094091/Falk-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/7095096090098098/Amy-Foster-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/2092095096096096/An-Outcast-of-the-Islands-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/3097090098097092/Youth-amp-The-End-of-the-Tether-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/4094092092095094/An-Outcast-of-the-Islands-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/1090098097098096094/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/5098090094097094/The-Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/5098093095091094/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/4096095097097091/The-Secret-Agent-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/1090095092091095090/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/3099097091091090/Gaspar-Ruiz-by-Joseph-Conrad.pdf
    • http://loaminoo.linkpc.net/8096099090097095/Heart-of-Darkness-by-Joseph-Conrad.pdf

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