Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a985e51734d5bd…

MALICIOUS

PDF

18.0 KB Created: 2020-03-15 22:24:27 +00:00 Authoring application: mPDF 5.7
MD5: f4e6253bd544dfaaba3623a6cc64379c SHA-1: 0ff4a698d6847c72b9b1c4f1b1afa2b8a74594f0 SHA-256: c5a985e51734d5bd3e655bfe391832ea8c031e285a77885a215cdebc43a87ec0
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified as a link farm. The primary heuristic indicates this is a critical finding, suggesting the document's purpose is to direct users to external sites. The ML classifier strongly supports the malicious nature of the PDF. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://owlaokopdf.myhome.cx/581618162816681638167/They-Left-Us-Everything-A-Memoir-by-Plum-Johnson.pdf
    • http://owlaokopdf.myhome.cx/281668166816281608162/Plum-Lovin-A-Stephanie-Plum-Between-the-Numbers-Holiday-Novel-2-by-Janet-Evanovich.pdf
    • http://owlaokopdf.myhome.cx/281668168816481618166/Twice-the-Plum-Two-Stephanie-Plum-Between-the-Numbers-Novels-by-Janet-Evanovich.pdf
    • http://owlaokopdf.myhome.cx/48164816781688165/Plum-Spooky-Stephanie-Plum-14-5-by-Janet-Evanovich.pdf
    • http://owlaokopdf.myhome.cx/181648160816781638160/Plum-Boxed-Set-2-Stephanie-Plum-4-6-by-Janet-Evanovich.pdf
    • http://owlaokopdf.myhome.cx/481648160816981618162/Seven-houses-a-memoir-of-time-and-places-by-Josephine-Winslow-Johnson.pdf
    • http://owlaokopdf.myhome.cx/281608167816281658168/From-a-Hard-Rock-to-a-Gem-A-Memoir-of-a-Lost-Soul-by-Pamela-M-Johnson.pdf
    • http://owlaokopdf.myhome.cx/381618166816181618163/The-Dogs-Buried-Over-the-Bridge-A-Memoir-in-Dog-Years-by-Rheta-G-Johnson.pdf
    • http://owlaokopdf.myhome.cx/681698165816581698160/Carnivore-A-Memoir-by-One-of-the-Deadliest-American-Soldiers-of-All-Time-by-Dillard-Johnson.pdf
    • http://owlaokopdf.myhome.cx/281648161816981628167/This-Child-Will-Be-Great-Memoir-of-a-Remarkable-Life-by-Africa-s-First-Woman-President-by-Ellen-Johnson-Sirleaf.pdf
    • http://owlaokopdf.myhome.cx/581638168816681618163/The-Stephanie-Plum-Novels-2-Stephanie-Plum-6-8-by-Janet-Evanovich.pdf
    • http://owlaokopdf.myhome.cx/48163816281678167/Left-Behind-Series-Gift-Set-Left-Behind-1-6-by-Jerry-B-Jenkins.pdf
    • http://owlaokopdf.myhome.cx/58165816781618160/What-s-Left-of-Me-What-s-Left-of-Me-1-by-Amanda-Maxlyn.pdf
    • http://owlaokopdf.myhome.cx/18160816781678166/The-Left-Hand-of-God-The-Left-Hand-of-God-1-by-Paul-Hoffman.pdf
    • http://owlaokopdf.myhome.cx/581638166816281608161/Left-of-the-Left-My-Memories-of-Sam-Dolgoff-by-Anatole-Dolgoff.pdf
    • http://owlaokopdf.myhome.cx/38169816881688162/Left-Drowning-Left-Drowning-1-by-Jessica-Park.pdf
    • http://owlaokopdf.myhome.cx/181698162816181648161/Left-Drowning-Left-Drowning-1-by-Jessica-Park.pdf
    • http://owlaokopdf.myhome.cx/1816881688163/Everything-I-Left-Unsaid-Everything-I-Left-Unsaid-1-by-Molly-O-39-Keefe.pdf
    • http://owlaokopdf.myhome.cx/181658169816481698165/The-Tylenol-Mafia-Marketing-Murder-and-Johnson-amp-Johnson-by-Scott-Bartz.pdf
    • http://owlaokopdf.myhome.cx/181658168816881618163/Dolly-and-the-Bird-of-Paradise-Johnson-Johnson-6-by-Dorothy-Dunnett.pdf

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