Malicious PDF — malware analysis report

Static analysis result for SHA-256 db114d5f4e8ba7d6…

MALICIOUS

PDF

23.0 KB Created: 2019-05-01 06:10:45 +01:00 Authoring application: mPDF 5.7
MD5: 2461f510c0c89121e1397290f1a521ef SHA-1: a49102f16e44f15facbb7fecab0a50b44a9f2e0e SHA-256: db114d5f4e8ba7d6641702b4ead13903abc1f08dc822fe57665c14c3454c8bd1
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a link farm, with 32 external PDF links embedded. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the sheer volume of links suggests a malicious intent, likely to lead users to phishing pages or download further malware. The embedded URLs are the primary IOCs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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/7094090099091091/Same-Family-Different-Colors-Confronting-Colorism-in-America-s-Diverse-Families-by-Lori-L-Tharps.pdf
    • http://loaminoo.linkpc.net/7094090099098090/Individuals-and-Families-in-a-Diverse-Society-by-Maureen-Holloway.pdf
    • http://loaminoo.linkpc.net/1098099094091094/Squeezed-Why-Our-Families-Can-t-Afford-America-by-Alissa-Quart.pdf
    • http://loaminoo.linkpc.net/5099096098099/Keep-the-Colors-Flying-The-United-States-Navy-on-America-s-Inland-Seas-by-David-Ritchey.pdf
    • http://loaminoo.linkpc.net/1090094090090098092/Rentsch-Herold-Families-In-America-by-Mary-Burney-Matreyek.pdf
    • http://loaminoo.linkpc.net/4092093093092090/Choosing-Colors-An-Expert-Choice-of-the-Best-Colors-to-Use-in-Your-Home-by-Kevin-McCloud.pdf
    • http://loaminoo.linkpc.net/3097090090098096/All-the-Presidents-Children-Triumph-and-Tragedy-in-the-Lives-of-America-s-First-Families-by-Doug-Wead.pdf
    • http://loaminoo.linkpc.net/6091093097092099/Regaining-the-Dream-How-to-Renew-the-Promise-of-Homeownership-for-America-s-Working-Families-by-Robert-G-Quercia.pdf
    • http://loaminoo.linkpc.net/6091093094098097/Regaining-the-Dream-How-to-Renew-the-Promise-of-Homeownership-for-America-s-Working-Families-by-Roberto-G-Quercia.pdf
    • http://loaminoo.linkpc.net/4093091093097092/Scattered-Colors-Colors-1-by-Jessica-Prince.pdf
    • http://loaminoo.linkpc.net/6092090090097093/Red-Families-v-Blue-Families-Legal-Polarization-and-the-Creation-of-Culture-by-Naomi-R-Cahn.pdf
    • http://loaminoo.linkpc.net/8094091094091099/A-History-and-Genealogy-of-the-Families-of-Bellinger-and-de-Veaux-and-Other-Families-by-Joseph-Gaston-Baillie-Bulloch.pdf
    • http://loaminoo.linkpc.net/3093099090097090/Moving-with-Kids-25-Ways-to-Ease-Your-Family-s-Transition-to-a-New-Home-by-Lori-Collins-Burgan.pdf
    • http://loaminoo.linkpc.net/3099097099095091/True-Colors-Landry-s-True-Colors-1-by-Krysten-Lindsay-Hager.pdf
    • http://loaminoo.linkpc.net/8091091094093093/A-Farming-Family-in-the-New-World-The-Barnard-Family-Saga-in-America-1679-2005-by-C-A-Coffey-Claudia-Barnard-Coffey.pdf
    • http://loaminoo.linkpc.net/8096093094092091/Outpost-for-Hope-Family-Resource-Kit-For-the-Families-f-the-Missing-quot-Missing-Popualtion-quot-by-Libba-Phillips.pdf
    • http://loaminoo.linkpc.net/6097092093094092/The-Friederich-Family-in-America-by-John-E-Richardson.pdf
    • http://loaminoo.linkpc.net/1091096095099099/Lori-s-Song-The-True-Story-of-an-American-Woman-Held-Captive-in-Iran-by-Lori-Foroozandeh.pdf
    • http://loaminoo.linkpc.net/1099092091096/Family-A-Portrait-of-Gay-and-Lesbian-America-by-Nancy-Andrews.pdf
    • http://loaminoo.linkpc.net/1092098090094/Murdock-s-Family-Men-Made-in-America-II-37-by-Paula-Detmer-Riggs.pdf
    • http://loaminoo.linkpc.net/3097090090098096/All-the-

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