Malicious PDF — malware analysis report

Static analysis result for SHA-256 47aa0490e31b0543…

MALICIOUS

PDF

12.9 KB Created: 2019-04-30 17:32:53 +01:00 Authoring application: mPDF 5.7
MD5: 01f44e96048de21549609acd7e014c5f SHA-1: 794e3a02b39d0e3e215abe457c06cac0385e8ea1 SHA-256: 47aa0490e31b054341cdf4583fb7279ef7909fb72bc6f0e788b24d42a397a30f
90 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious. It contains a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM' heuristic, pointing to external PDF files. While the specific intent of these links is unclear due to the lack of readable document body text, the sheer volume and the nature of the heuristic suggest a distribution or SEO poisoning attack. The URLs themselves are the primary IOCs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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/9094098094093/Prisoner-in-a-Red-Rose-Chain-by-Jeffrey-Moore.pdf
    • http://loaminoo.linkpc.net/6093097091099092/Heads-You-Win-A-Novel-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/1091097097097099093/Hai-S-Ph-n-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/9099091097096092/One-Man-s-Meat-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/4092097099093096/Paths-of-Glory-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/4094091099/This-Was-a-Man-The-Clifton-Chronicles-7-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/5090092090091095/Paths-of-Glory-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/4090099096098096/The-Sins-of-the-Father-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/1093092090095090/The-Fourth-Estate-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/4091093099093/The-Eleventh-Commandment-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/3096092090099/As-the-Crow-Flies-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/4093099090093/A-Matter-of-Honor-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/7098091092091/Purgatory-A-Prison-Diary-2-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/4098097096099/Heaven-A-Prison-Diary-3-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/8098092095094/To-Cut-a-Long-Story-Short-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/2093099/Mightier-Than-the-Sword-The-Clifton-Chronicles-5-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/4091095093098094/The-Gospel-According-to-Judas-by-Benjamin-Iscariot-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/8093095097094091/-ekneme-to-prezidentce-Kane-amp-Abel-3-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/2096093098/Cometh-the-Hour-The-Clifton-Chronicles-6-by-Jeffrey-Archer.pdf
    • http://loaminoo.linkpc.net/4098097091090090/Cometh-the-Hour-The-Clifton-Chronicles-6-by-Jeffrey-Archer.pdf

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