Malicious PDF — malware analysis report

Static analysis result for SHA-256 8636303810fd9451…

MALICIOUS

PDF

13.7 KB Created: 2019-04-30 05:43:05 +01:00 Authoring application: mPDF 5.7
MD5: 824d0d7aa9328a326186694e100ecdf6 SHA-1: 0c9430a9dc3eb1be87c001e0758094261db4ccbc SHA-256: 8636303810fd94517472794a094b458a73a404c6d4926bb663f957f538f890da
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common tactic for SEO manipulation or to host malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, preventing a more detailed analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/1095093098099092/A-Cry-In-The-Night-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/6098091099091095/The-Classic-Clark-Collection-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/2096098099095/Mary-Higgins-Clark-Presents-Malice-Domestic-Malice-Domestic-2-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/2096091098096096/I-ll-Be-Seeing-You-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/2096096094093093/Where-Are-You-Now-A-Novel-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/5094098097/All-By-Myself-Alone-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/3099099095097/All-Around-the-Town-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/2096095099097097/Stillwatch-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/9092094093/You-Don-t-Own-Me-Under-Suspicion-6-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/2092095093099091/Remember-Me-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/3094092090097090/Before-I-Say-Good-Bye-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/1098096098095093/I-ll-Walk-Alone-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/2094090098094098/Pretend-You-Don-t-See-Her-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/5093095092094/While-My-Pretty-One-Sleeps-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/1095099096098091/Daddy-s-Little-Girl-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/1095093098099091/On-the-Street-Where-You-Live-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/1095093098099099/I-ve-Got-You-Under-My-Skin-Under-Suspicion-1-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/3090094095099099/While-My-Pretty-One-Sleeps-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/4096092090092/I-Heard-That-Song-Before-by-Mary-Higgins-Clark.pdf
    • http://loaminoo.linkpc.net/1099090095096096/The-Lottery-Winner-by-Mary-Higgins-Clark.pdf

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