Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ecf1f6bb303f02…

MALICIOUS

PDF

15.8 KB Created: 2019-04-30 04:12:22 +01:00 Authoring application: mPDF 5.7
MD5: bbd25fc5b9a1dbed6314e63036959471 SHA-1: 40e9d7a2ebe2371fa39e15afd5ee18082e047d55 SHA-256: 52ecf1f6bb303f02c0ae13e4522dc712bdbb5fda24c68ed2b0b31d170f7cab7b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file 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 various PDF documents hosted on 'loaminoo.linkpc.net'. While the specific intent of these links is unclear without further analysis of the linked content, the sheer volume and the nature of the heuristic suggest a malicious attempt to manipulate search engine results or distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

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/1097098094099095/Rocky-Mountain-Desire-Six-Pack-Ranch-3-Rocky-Mountain-House-3-by-Vivian-Arend.pdf
    • http://loaminoo.linkpc.net/2099097091094096/Rocky-Mountain-Heat-Six-Pack-Ranch-1-by-Vivian-Arend.pdf
    • http://loaminoo.linkpc.net/3092095099099090/Rocky-Mountain-Rebel-Six-Pack-Ranch-5-by-Vivian-Arend.pdf
    • http://loaminoo.linkpc.net/3093096093094099/Rocky-Mountain-Heat-Six-Pack-Ranch-1-by-Vivian-Arend.pdf
    • http://loaminoo.linkpc.net/1097097094098091/Rocky-Mountain-Angel-Six-Pack-Ranch-4-by-Vivian-Arend.pdf
    • http://loaminoo.linkpc.net/2090092098092098/One-Sexy-Ride-Thompson-amp-Sons-3-Rocky-Mountain-House-10-by-Vivian-Arend.pdf
    • http://loaminoo.linkpc.net/4091098092093097/Rocky-Mountain-Cowboy-Christmas-Rocky-Mountain-Cowboys-1-by-Katie-Ruggle.pdf
    • http://loaminoo.linkpc.net/2092093090094097/To-Know-Her-by-Name-Rocky-Mountain-Memories-3-by-Lori-Wick.pdf
    • http://loaminoo.linkpc.net/2094099094098097/Rocky-Mountain-Miracle-by-Christine-Feehan.pdf
    • http://loaminoo.linkpc.net/2095095099095094/The-Outlaw-Rocky-Mountain-1-by-Nicole-Jordan.pdf
    • http://loaminoo.linkpc.net/3093096094092092/Run-to-Ground-Rocky-Mountain-K9-Unit-1-by-Katie-Ruggle.pdf
    • http://loaminoo.linkpc.net/7092098092093/A-Dozen-on-Denver-Stories-by-Rocky-Mountain-News.pdf
    • http://loaminoo.linkpc.net/4091092098090099/Rocky-Mountain-Man-Hunt-Collection-Box-Set-9-by-Taylor-Brooks.pdf
    • http://loaminoo.linkpc.net/2099097094099090/Curt-Rocky-Mountain-Bachelors-1-by-Carr-White.pdf
    • http://loaminoo.linkpc.net/8090091091095/Extraordinary-Women-of-the-Rocky-Mountain-West-by-Tim-Blevins.pdf
    • http://loaminoo.linkpc.net/2092093090097097/Promise-Me-Tomorrow-Rocky-Mountain-Memories-4-by-Lori-Wick.pdf
    • http://loaminoo.linkpc.net/3092099095092094/Blood-Brothers-Rocky-Mountain-Shifters-2-by-Susan-Arden.pdf
    • http://loaminoo.linkpc.net/8091092095092097/Mushrooms-of-the-Rocky-Mountain-Region-by-Vera-Stucky-Evenson.pdf
    • http://loaminoo.linkpc.net/1099095092095098/Little-Things-in-a-Big-Country-An-Artist-and-Her-Dog-on-the-Rocky-Mountain-Front-by-Hannah-Hinchman.pdf
    • http://loaminoo.linkpc.net/7092097090092/Rocky-Mountain-Beginnings-Lucy-Dakota-Book-1-by-Carol-Sue-Shride.pdf
    • http://loaminoo.linkpc.net/4091092098090099/Rocky-Mountain-Man-Hunt-Collection-Box-Set-9-by